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Finding the Fourth Proportional to 801,387.92, 1,202,120.76 and 660,890

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Solution

The fourth proportional to 801,387.92, 1,202,120.76 and 660,890 is: 991,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,387.92 : 1,202,120.76 = 660,890 : x
  2. Step 2: Convert to fraction form
    801,387.92/1,202,120.76 = 660,890/x
  3. Step 3: Cross multiply
    801,387.92x = 1,202,120.76 × 660,890
  4. Step 4: Simplify right side
    801,387.92x = 794,469,589,076.40
  5. Step 5: Solve for x
    x = 794,469,589,076.40/801,387.92
  6. Step 6: Final answer
    x = 991,367.06

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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.