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Finding the Third Proportional to 299,198 and 645,952

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Solution

The third proportional to 299,198 and 645,952 is: 1,394,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,198 : 645,952 = 645,952 : x
  2. Step 2: Convert to fraction form
    299,198/645,952 = 645,952/x
  3. Step 3: Cross multiply
    299,198x = 645,952 × 645,952
  4. Step 4: Simplify right side
    299,198x = 417,253,986,304
  5. Step 5: Solve for x
    x = 417,253,986,304/299,198
  6. Step 6: Final answer
    x = 1,394,574.78

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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.