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Finding the Third Proportional to 413,899 and 909,081

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Solution

The third proportional to 413,899 and 909,081 is: 1,996,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,899 : 909,081 = 909,081 : x
  2. Step 2: Convert to fraction form
    413,899/909,081 = 909,081/x
  3. Step 3: Cross multiply
    413,899x = 909,081 × 909,081
  4. Step 4: Simplify right side
    413,899x = 826,428,264,561
  5. Step 5: Solve for x
    x = 826,428,264,561/413,899
  6. Step 6: Final answer
    x = 1,996,690.65

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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.