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Finding the Third Proportional to 1,986,867 and 3,147,489

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Solution

The third proportional to 1,986,867 and 3,147,489 is: 4,986,084.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,867 : 3,147,489 = 3,147,489 : x
  2. Step 2: Convert to fraction form
    1,986,867/3,147,489 = 3,147,489/x
  3. Step 3: Cross multiply
    1,986,867x = 3,147,489 × 3,147,489
  4. Step 4: Simplify right side
    1,986,867x = 9,906,687,005,121
  5. Step 5: Solve for x
    x = 9,906,687,005,121/1,986,867
  6. Step 6: Final answer
    x = 4,986,084.63

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.