Home / 801,717.20-1,202,575.80-428,469.20

Finding the Fourth Proportional to 801,717.20, 1,202,575.80 and 428,469.20

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Solution

The fourth proportional to 801,717.20, 1,202,575.80 and 428,469.20 is: 642,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,717.20 : 1,202,575.80 = 428,469.20 : x
  2. Step 2: Convert to fraction form
    801,717.20/1,202,575.80 = 428,469.20/x
  3. Step 3: Cross multiply
    801,717.20x = 1,202,575.80 × 428,469.20
  4. Step 4: Simplify right side
    801,717.20x = 515,266,690,965.36
  5. Step 5: Solve for x
    x = 515,266,690,965.36/801,717.20
  6. Step 6: Final answer
    x = 642,703.80

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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.