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Finding the Third Proportional to 721,132.88 and 1,538,786.11

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Solution

The third proportional to 721,132.88 and 1,538,786.11 is: 3,283,531.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,132.88 : 1,538,786.11 = 1,538,786.11 : x
  2. Step 2: Convert to fraction form
    721,132.88/1,538,786.11 = 1,538,786.11/x
  3. Step 3: Cross multiply
    721,132.88x = 1,538,786.11 × 1,538,786.11
  4. Step 4: Simplify right side
    721,132.88x = 2,367,862,690,405.45
  5. Step 5: Solve for x
    x = 2,367,862,690,405.45/721,132.88
  6. Step 6: Final answer
    x = 3,283,531.75

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.