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Finding the Third Proportional to 555,755 and 861,089

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Solution

The third proportional to 555,755 and 861,089 is: 1,334,174.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,755 : 861,089 = 861,089 : x
  2. Step 2: Convert to fraction form
    555,755/861,089 = 861,089/x
  3. Step 3: Cross multiply
    555,755x = 861,089 × 861,089
  4. Step 4: Simplify right side
    555,755x = 741,474,265,921
  5. Step 5: Solve for x
    x = 741,474,265,921/555,755
  6. Step 6: Final answer
    x = 1,334,174.71

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.