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Finding the Fourth Proportional to 638,426.70, 957,640.05 and 524,265.30

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Solution

The fourth proportional to 638,426.70, 957,640.05 and 524,265.30 is: 786,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,426.70 : 957,640.05 = 524,265.30 : x
  2. Step 2: Convert to fraction form
    638,426.70/957,640.05 = 524,265.30/x
  3. Step 3: Cross multiply
    638,426.70x = 957,640.05 × 524,265.30
  4. Step 4: Simplify right side
    638,426.70x = 502,057,448,105.27
  5. Step 5: Solve for x
    x = 502,057,448,105.27/638,426.70
  6. Step 6: Final answer
    x = 786,397.95

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Similar ratio
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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.