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Finding the Third Proportional to 555,756 and 861,090

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Solution

The third proportional to 555,756 and 861,090 is: 1,334,175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,756 : 861,090 = 861,090 : x
  2. Step 2: Convert to fraction form
    555,756/861,090 = 861,090/x
  3. Step 3: Cross multiply
    555,756x = 861,090 × 861,090
  4. Step 4: Simplify right side
    555,756x = 741,475,988,100
  5. Step 5: Solve for x
    x = 741,475,988,100/555,756
  6. Step 6: Final answer
    x = 1,334,175.41

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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.