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Finding the Third Proportional to 391,212 and 834,098

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Solution

The third proportional to 391,212 and 834,098 is: 1,778,369.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,212 : 834,098 = 834,098 : x
  2. Step 2: Convert to fraction form
    391,212/834,098 = 834,098/x
  3. Step 3: Cross multiply
    391,212x = 834,098 × 834,098
  4. Step 4: Simplify right side
    391,212x = 695,719,473,604
  5. Step 5: Solve for x
    x = 695,719,473,604/391,212
  6. Step 6: Final answer
    x = 1,778,369.46

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.