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Finding the Fourth Proportional to 624,605.86, 861,955.10 and 338,125.87

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Solution

The fourth proportional to 624,605.86, 861,955.10 and 338,125.87 is: 466,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,605.86 : 861,955.10 = 338,125.87 : x
  2. Step 2: Convert to fraction form
    624,605.86/861,955.10 = 338,125.87/x
  3. Step 3: Cross multiply
    624,605.86x = 861,955.10 × 338,125.87
  4. Step 4: Simplify right side
    624,605.86x = 291,449,316,397.81
  5. Step 5: Solve for x
    x = 291,449,316,397.81/624,605.86
  6. Step 6: Final answer
    x = 466,613.16

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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.