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Finding the Fourth Proportional to 822,737.28, 1,234,028.16 and 261,672.96

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Solution

The fourth proportional to 822,737.28, 1,234,028.16 and 261,672.96 is: 392,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,737.28 : 1,234,028.16 = 261,672.96 : x
  2. Step 2: Convert to fraction form
    822,737.28/1,234,028.16 = 261,672.96/x
  3. Step 3: Cross multiply
    822,737.28x = 1,234,028.16 × 261,672.96
  4. Step 4: Simplify right side
    822,737.28x = 322,911,801,350.55
  5. Step 5: Solve for x
    x = 322,911,801,350.55/822,737.28
  6. Step 6: Final answer
    x = 392,484.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.