Home / 681,702.40-1,021,387.20-432,092.80

Finding the Fourth Proportional to 681,702.40, 1,021,387.20 and 432,092.80

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Solution

The fourth proportional to 681,702.40, 1,021,387.20 and 432,092.80 is: 647,399.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,702.40 : 1,021,387.20 = 432,092.80 : x
  2. Step 2: Convert to fraction form
    681,702.40/1,021,387.20 = 432,092.80/x
  3. Step 3: Cross multiply
    681,702.40x = 1,021,387.20 × 432,092.80
  4. Step 4: Simplify right side
    681,702.40x = 441,334,055,132.16
  5. Step 5: Solve for x
    x = 441,334,055,132.16/681,702.40
  6. Step 6: Final answer
    x = 647,399.88

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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.