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Finding the Fourth Proportional to 624,617.17, 861,964.55 and 338,130.97

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Solution

The fourth proportional to 624,617.17, 861,964.55 and 338,130.97 is: 466,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,617.17 : 861,964.55 = 338,130.97 : x
  2. Step 2: Convert to fraction form
    624,617.17/861,964.55 = 338,130.97/x
  3. Step 3: Cross multiply
    624,617.17x = 861,964.55 × 338,130.97
  4. Step 4: Simplify right side
    624,617.17x = 291,456,907,706.46
  5. Step 5: Solve for x
    x = 291,456,907,706.46/624,617.17
  6. Step 6: Final answer
    x = 466,616.87

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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.