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Finding the Fourth Proportional to 418,331.25, 629,773.04 and 381,130.38

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Solution

The fourth proportional to 418,331.25, 629,773.04 and 381,130.38 is: 573,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,331.25 : 629,773.04 = 381,130.38 : x
  2. Step 2: Convert to fraction form
    418,331.25/629,773.04 = 381,130.38/x
  3. Step 3: Cross multiply
    418,331.25x = 629,773.04 × 381,130.38
  4. Step 4: Simplify right side
    418,331.25x = 240,025,639,001.78
  5. Step 5: Solve for x
    x = 240,025,639,001.78/418,331.25
  6. Step 6: Final answer
    x = 573,769.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.