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Finding the Third Proportional to 485,631 and 990,531

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Solution

The third proportional to 485,631 and 990,531 is: 2,020,364.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,631 : 990,531 = 990,531 : x
  2. Step 2: Convert to fraction form
    485,631/990,531 = 990,531/x
  3. Step 3: Cross multiply
    485,631x = 990,531 × 990,531
  4. Step 4: Simplify right side
    485,631x = 981,151,661,961
  5. Step 5: Solve for x
    x = 981,151,661,961/485,631
  6. Step 6: Final answer
    x = 2,020,364.56

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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.