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Finding the Fourth Proportional to 624,428.63, 861,711.53 and 337,948.72

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Solution

The fourth proportional to 624,428.63, 861,711.53 and 337,948.72 is: 466,369.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,428.63 : 861,711.53 = 337,948.72 : x
  2. Step 2: Convert to fraction form
    624,428.63/861,711.53 = 337,948.72/x
  3. Step 3: Cross multiply
    624,428.63x = 861,711.53 × 337,948.72
  4. Step 4: Simplify right side
    624,428.63x = 291,214,308,572.74
  5. Step 5: Solve for x
    x = 291,214,308,572.74/624,428.63
  6. Step 6: Final answer
    x = 466,369.24

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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.