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Finding the Third Proportional to 394,758 and 868,242

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Solution

The third proportional to 394,758 and 868,242 is: 1,909,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,758 : 868,242 = 868,242 : x
  2. Step 2: Convert to fraction form
    394,758/868,242 = 868,242/x
  3. Step 3: Cross multiply
    394,758x = 868,242 × 868,242
  4. Step 4: Simplify right side
    394,758x = 753,844,170,564
  5. Step 5: Solve for x
    x = 753,844,170,564/394,758
  6. Step 6: Final answer
    x = 1,909,636.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.