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Finding the Fourth Proportional to 624,428.39, 861,711.18 and 337,948.47

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Solution

The fourth proportional to 624,428.39, 861,711.18 and 337,948.47 is: 466,368.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,428.39 : 861,711.18 = 337,948.47 : x
  2. Step 2: Convert to fraction form
    624,428.39/861,711.18 = 337,948.47/x
  3. Step 3: Cross multiply
    624,428.39x = 861,711.18 × 337,948.47
  4. Step 4: Simplify right side
    624,428.39x = 291,213,974,862.90
  5. Step 5: Solve for x
    x = 291,213,974,862.90/624,428.39
  6. Step 6: Final answer
    x = 466,368.89

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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.