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Finding the Fourth Proportional to 485,773.76, 728,308.32 and 327,609.92

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Solution

The fourth proportional to 485,773.76, 728,308.32 and 327,609.92 is: 491,177.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,773.76 : 728,308.32 = 327,609.92 : x
  2. Step 2: Convert to fraction form
    485,773.76/728,308.32 = 327,609.92/x
  3. Step 3: Cross multiply
    485,773.76x = 728,308.32 × 327,609.92
  4. Step 4: Simplify right side
    485,773.76x = 238,601,030,450.53
  5. Step 5: Solve for x
    x = 238,601,030,450.53/485,773.76
  6. Step 6: Final answer
    x = 491,177.27

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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.