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Finding the Fourth Proportional to 625,100.64, 862,463.82 and 392,552.64

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Solution

The fourth proportional to 625,100.64, 862,463.82 and 392,552.64 is: 541,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,100.64 : 862,463.82 = 392,552.64 : x
  2. Step 2: Convert to fraction form
    625,100.64/862,463.82 = 392,552.64/x
  3. Step 3: Cross multiply
    625,100.64x = 862,463.82 × 392,552.64
  4. Step 4: Simplify right side
    625,100.64x = 338,562,449,445.49
  5. Step 5: Solve for x
    x = 338,562,449,445.49/625,100.64
  6. Step 6: Final answer
    x = 541,612.71

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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.