Home / 678,682.14-936,544.82-388,299.46

Finding the Fourth Proportional to 678,682.14, 936,544.82 and 388,299.46

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Solution

The fourth proportional to 678,682.14, 936,544.82 and 388,299.46 is: 535,832.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,682.14 : 936,544.82 = 388,299.46 : x
  2. Step 2: Convert to fraction form
    678,682.14/936,544.82 = 388,299.46/x
  3. Step 3: Cross multiply
    678,682.14x = 936,544.82 × 388,299.46
  4. Step 4: Simplify right side
    678,682.14x = 363,659,845,666.08
  5. Step 5: Solve for x
    x = 363,659,845,666.08/678,682.14
  6. Step 6: Final answer
    x = 535,832.35

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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.