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Finding the Fourth Proportional to 625,085.02, 862,442.29 and 392,537.02

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Solution

The fourth proportional to 625,085.02, 862,442.29 and 392,537.02 is: 541,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,085.02 : 862,442.29 = 392,537.02 : x
  2. Step 2: Convert to fraction form
    625,085.02/862,442.29 = 392,537.02/x
  3. Step 3: Cross multiply
    625,085.02x = 862,442.29 × 392,537.02
  4. Step 4: Simplify right side
    625,085.02x = 338,540,520,163.68
  5. Step 5: Solve for x
    x = 338,540,520,163.68/625,085.02
  6. Step 6: Final answer
    x = 541,591.16

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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.