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Finding the Third Proportional to 397,314 and 868,902

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Solution

The third proportional to 397,314 and 868,902 is: 1,900,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,314 : 868,902 = 868,902 : x
  2. Step 2: Convert to fraction form
    397,314/868,902 = 868,902/x
  3. Step 3: Cross multiply
    397,314x = 868,902 × 868,902
  4. Step 4: Simplify right side
    397,314x = 754,990,685,604
  5. Step 5: Solve for x
    x = 754,990,685,604/397,314
  6. Step 6: Final answer
    x = 1,900,236.80

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.