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Finding the Third Proportional to 635,442 and 1,396,821

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Solution

The third proportional to 635,442 and 1,396,821 is: 3,070,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,442 : 1,396,821 = 1,396,821 : x
  2. Step 2: Convert to fraction form
    635,442/1,396,821 = 1,396,821/x
  3. Step 3: Cross multiply
    635,442x = 1,396,821 × 1,396,821
  4. Step 4: Simplify right side
    635,442x = 1,951,108,906,041
  5. Step 5: Solve for x
    x = 1,951,108,906,041/635,442
  6. Step 6: Final answer
    x = 3,070,475.21

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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.