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Finding the Third Proportional to 555,756 and 861,091

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Solution

The third proportional to 555,756 and 861,091 is: 1,334,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,756 : 861,091 = 861,091 : x
  2. Step 2: Convert to fraction form
    555,756/861,091 = 861,091/x
  3. Step 3: Cross multiply
    555,756x = 861,091 × 861,091
  4. Step 4: Simplify right side
    555,756x = 741,477,710,281
  5. Step 5: Solve for x
    x = 741,477,710,281/555,756
  6. Step 6: Final answer
    x = 1,334,178.51

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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.