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Finding the Third Proportional to 691,147 and 1,081,867

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Solution

The third proportional to 691,147 and 1,081,867 is: 1,693,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,147 : 1,081,867 = 1,081,867 : x
  2. Step 2: Convert to fraction form
    691,147/1,081,867 = 1,081,867/x
  3. Step 3: Cross multiply
    691,147x = 1,081,867 × 1,081,867
  4. Step 4: Simplify right side
    691,147x = 1,170,436,205,689
  5. Step 5: Solve for x
    x = 1,170,436,205,689/691,147
  6. Step 6: Final answer
    x = 1,693,469.27

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.