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Finding the Fourth Proportional to 667,057.57, 920,532.82 and 361,125.87

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Solution

The fourth proportional to 667,057.57, 920,532.82 and 361,125.87 is: 498,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,057.57 : 920,532.82 = 361,125.87 : x
  2. Step 2: Convert to fraction form
    667,057.57/920,532.82 = 361,125.87/x
  3. Step 3: Cross multiply
    667,057.57x = 920,532.82 × 361,125.87
  4. Step 4: Simplify right side
    667,057.57x = 332,428,215,486.05
  5. Step 5: Solve for x
    x = 332,428,215,486.05/667,057.57
  6. Step 6: Final answer
    x = 498,350.11

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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.