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Finding the Fourth Proportional to 624,616.92, 861,964.20 and 338,130.72

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Solution

The fourth proportional to 624,616.92, 861,964.20 and 338,130.72 is: 466,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.92 : 861,964.20 = 338,130.72 : x
  2. Step 2: Convert to fraction form
    624,616.92/861,964.20 = 338,130.72/x
  3. Step 3: Cross multiply
    624,616.92x = 861,964.20 × 338,130.72
  4. Step 4: Simplify right side
    624,616.92x = 291,456,575,560.22
  5. Step 5: Solve for x
    x = 291,456,575,560.22/624,616.92
  6. Step 6: Final answer
    x = 466,616.52

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1.5x scale

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.