Home / 726,472.74-1,002,507.15-399,755.19

Finding the Fourth Proportional to 726,472.74, 1,002,507.15 and 399,755.19

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Solution

The fourth proportional to 726,472.74, 1,002,507.15 and 399,755.19 is: 551,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,472.74 : 1,002,507.15 = 399,755.19 : x
  2. Step 2: Convert to fraction form
    726,472.74/1,002,507.15 = 399,755.19/x
  3. Step 3: Cross multiply
    726,472.74x = 1,002,507.15 × 399,755.19
  4. Step 4: Simplify right side
    726,472.74x = 400,757,436,224.61
  5. Step 5: Solve for x
    x = 400,757,436,224.61/726,472.74
  6. Step 6: Final answer
    x = 551,648.28

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Double scale
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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.