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Finding the Fourth Proportional to 667,008.52, 920,471.56 and 361,084.68

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Solution

The fourth proportional to 667,008.52, 920,471.56 and 361,084.68 is: 498,296.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,008.52 : 920,471.56 = 361,084.68 : x
  2. Step 2: Convert to fraction form
    667,008.52/920,471.56 = 361,084.68/x
  3. Step 3: Cross multiply
    667,008.52x = 920,471.56 × 361,084.68
  4. Step 4: Simplify right side
    667,008.52x = 332,368,178,691.70
  5. Step 5: Solve for x
    x = 332,368,178,691.70/667,008.52
  6. Step 6: Final answer
    x = 498,296.75

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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.