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Finding the Third Proportional to 655,422 and 987,750

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Solution

The third proportional to 655,422 and 987,750 is: 1,488,583.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,422 : 987,750 = 987,750 : x
  2. Step 2: Convert to fraction form
    655,422/987,750 = 987,750/x
  3. Step 3: Cross multiply
    655,422x = 987,750 × 987,750
  4. Step 4: Simplify right side
    655,422x = 975,650,062,500
  5. Step 5: Solve for x
    x = 975,650,062,500/655,422
  6. Step 6: Final answer
    x = 1,488,583.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.