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Finding the Third Proportional to 395,439 and 853,086

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Solution

The third proportional to 395,439 and 853,086 is: 1,840,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,439 : 853,086 = 853,086 : x
  2. Step 2: Convert to fraction form
    395,439/853,086 = 853,086/x
  3. Step 3: Cross multiply
    395,439x = 853,086 × 853,086
  4. Step 4: Simplify right side
    395,439x = 727,755,723,396
  5. Step 5: Solve for x
    x = 727,755,723,396/395,439
  6. Step 6: Final answer
    x = 1,840,374.18

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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.