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Finding the Third Proportional to 394,890 and 852,822

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Solution

The third proportional to 394,890 and 852,822 is: 1,841,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,890 : 852,822 = 852,822 : x
  2. Step 2: Convert to fraction form
    394,890/852,822 = 852,822/x
  3. Step 3: Cross multiply
    394,890x = 852,822 × 852,822
  4. Step 4: Simplify right side
    394,890x = 727,305,363,684
  5. Step 5: Solve for x
    x = 727,305,363,684/394,890
  6. Step 6: Final answer
    x = 1,841,792.31

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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.