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Finding the Third Proportional to 485,626 and 990,530

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Solution

The third proportional to 485,626 and 990,530 is: 2,020,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,626 : 990,530 = 990,530 : x
  2. Step 2: Convert to fraction form
    485,626/990,530 = 990,530/x
  3. Step 3: Cross multiply
    485,626x = 990,530 × 990,530
  4. Step 4: Simplify right side
    485,626x = 981,149,680,900
  5. Step 5: Solve for x
    x = 981,149,680,900/485,626
  6. Step 6: Final answer
    x = 2,020,381.28

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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.