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Finding the Third Proportional to 655,186 and 987,396

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Solution

The third proportional to 655,186 and 987,396 is: 1,488,052.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,186 : 987,396 = 987,396 : x
  2. Step 2: Convert to fraction form
    655,186/987,396 = 987,396/x
  3. Step 3: Cross multiply
    655,186x = 987,396 × 987,396
  4. Step 4: Simplify right side
    655,186x = 974,950,860,816
  5. Step 5: Solve for x
    x = 974,950,860,816/655,186
  6. Step 6: Final answer
    x = 1,488,052.04

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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.