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Finding the Fourth Proportional to 625,154.72, 862,712.48 and 338,676

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Solution

The fourth proportional to 625,154.72, 862,712.48 and 338,676 is: 467,372.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,154.72 : 862,712.48 = 338,676 : x
  2. Step 2: Convert to fraction form
    625,154.72/862,712.48 = 338,676/x
  3. Step 3: Cross multiply
    625,154.72x = 862,712.48 × 338,676
  4. Step 4: Simplify right side
    625,154.72x = 292,180,011,876.48
  5. Step 5: Solve for x
    x = 292,180,011,876.48/625,154.72
  6. Step 6: Final answer
    x = 467,372.32

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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.