Home / 696,805,129,595.05-961,463,428,245.23-388,148,807,471.69

Finding the Fourth Proportional to 696,805,129,595.05, 961,463,428,245.23 and 388,148,807,471.69

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Solution

The fourth proportional to 696,805,129,595.05, 961,463,428,245.23 and 388,148,807,471.69 is: 535,574,247,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,805,129,595.05 : 961,463,428,245.23 = 388,148,807,471.69 : x
  2. Step 2: Convert to fraction form
    696,805,129,595.05/961,463,428,245.23 = 388,148,807,471.69/x
  3. Step 3: Cross multiply
    696,805,129,595.05x = 961,463,428,245.23 × 388,148,807,471.69
  4. Step 4: Simplify right side
    696,805,129,595.05x = 373,190,883,101,028,837,752,832
  5. Step 5: Solve for x
    x = 373,190,883,101,028,837,752,832/696,805,129,595.05
  6. Step 6: Final answer
    x = 535,574,247,735.39

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Half scale
Find fourth proportional to 1,393,610,259,190.10, 1,922,926,856,490.46 and 776,297,614,943.38
Double scale
Find fourth proportional to 696,805,129,596.05, 961,463,428,246.61 and 388,148,807,472.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.