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Finding the Third Proportional to 485,505 and 990,279

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Solution

The third proportional to 485,505 and 990,279 is: 2,019,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,505 : 990,279 = 990,279 : x
  2. Step 2: Convert to fraction form
    485,505/990,279 = 990,279/x
  3. Step 3: Cross multiply
    485,505x = 990,279 × 990,279
  4. Step 4: Simplify right side
    485,505x = 980,652,497,841
  5. Step 5: Solve for x
    x = 980,652,497,841/485,505
  6. Step 6: Final answer
    x = 2,019,860.76

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.