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Finding the Third Proportional to 427,464 and 664,530

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Solution

The third proportional to 427,464 and 664,530 is: 1,033,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,464 : 664,530 = 664,530 : x
  2. Step 2: Convert to fraction form
    427,464/664,530 = 664,530/x
  3. Step 3: Cross multiply
    427,464x = 664,530 × 664,530
  4. Step 4: Simplify right side
    427,464x = 441,600,120,900
  5. Step 5: Solve for x
    x = 441,600,120,900/427,464
  6. Step 6: Final answer
    x = 1,033,069.73

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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.