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Finding the Third Proportional to 655,182 and 987,390

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Solution

The third proportional to 655,182 and 987,390 is: 1,488,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,182 : 987,390 = 987,390 : x
  2. Step 2: Convert to fraction form
    655,182/987,390 = 987,390/x
  3. Step 3: Cross multiply
    655,182x = 987,390 × 987,390
  4. Step 4: Simplify right side
    655,182x = 974,939,012,100
  5. Step 5: Solve for x
    x = 974,939,012,100/655,182
  6. Step 6: Final answer
    x = 1,488,043.04

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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.