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Finding the Third Proportional to 392,422 and 847,568

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Solution

The third proportional to 392,422 and 847,568 is: 1,830,609.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,422 : 847,568 = 847,568 : x
  2. Step 2: Convert to fraction form
    392,422/847,568 = 847,568/x
  3. Step 3: Cross multiply
    392,422x = 847,568 × 847,568
  4. Step 4: Simplify right side
    392,422x = 718,371,514,624
  5. Step 5: Solve for x
    x = 718,371,514,624/392,422
  6. Step 6: Final answer
    x = 1,830,609.69

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.