Home / 691,101,047.70-1,036,651,571.55-645,751,415.70

Finding the Fourth Proportional to 691,101,047.70, 1,036,651,571.55 and 645,751,415.70

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Solution

The fourth proportional to 691,101,047.70, 1,036,651,571.55 and 645,751,415.70 is: 968,627,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101,047.70 : 1,036,651,571.55 = 645,751,415.70 : x
  2. Step 2: Convert to fraction form
    691,101,047.70/1,036,651,571.55 = 645,751,415.70/x
  3. Step 3: Cross multiply
    691,101,047.70x = 1,036,651,571.55 × 645,751,415.70
  4. Step 4: Simplify right side
    691,101,047.70x = 669,419,219,916,042,368
  5. Step 5: Solve for x
    x = 669,419,219,916,042,368/691,101,047.70
  6. Step 6: Final answer
    x = 968,627,123.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.