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Finding the Third Proportional to 396,069 and 851,845

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Solution

The third proportional to 396,069 and 851,845 is: 1,832,104.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,069 : 851,845 = 851,845 : x
  2. Step 2: Convert to fraction form
    396,069/851,845 = 851,845/x
  3. Step 3: Cross multiply
    396,069x = 851,845 × 851,845
  4. Step 4: Simplify right side
    396,069x = 725,639,904,025
  5. Step 5: Solve for x
    x = 725,639,904,025/396,069
  6. Step 6: Final answer
    x = 1,832,104.77

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.