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Finding the Fourth Proportional to 625,272.67, 862,892.33 and 383,688.74

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Solution

The fourth proportional to 625,272.67, 862,892.33 and 383,688.74 is: 529,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,272.67 : 862,892.33 = 383,688.74 : x
  2. Step 2: Convert to fraction form
    625,272.67/862,892.33 = 383,688.74/x
  3. Step 3: Cross multiply
    625,272.67x = 862,892.33 × 383,688.74
  4. Step 4: Simplify right side
    625,272.67x = 331,082,068,934.92
  5. Step 5: Solve for x
    x = 331,082,068,934.92/625,272.67
  6. Step 6: Final answer
    x = 529,500.31

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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.