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Finding the Third Proportional to 323,761 and 686,975

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Solution

The third proportional to 323,761 and 686,975 is: 1,457,663.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,761 : 686,975 = 686,975 : x
  2. Step 2: Convert to fraction form
    323,761/686,975 = 686,975/x
  3. Step 3: Cross multiply
    323,761x = 686,975 × 686,975
  4. Step 4: Simplify right side
    323,761x = 471,934,650,625
  5. Step 5: Solve for x
    x = 471,934,650,625/323,761
  6. Step 6: Final answer
    x = 1,457,663.68

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.