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Finding the Third Proportional to 485,682 and 990,636

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Solution

The third proportional to 485,682 and 990,636 is: 2,020,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,682 : 990,636 = 990,636 : x
  2. Step 2: Convert to fraction form
    485,682/990,636 = 990,636/x
  3. Step 3: Cross multiply
    485,682x = 990,636 × 990,636
  4. Step 4: Simplify right side
    485,682x = 981,359,684,496
  5. Step 5: Solve for x
    x = 981,359,684,496/485,682
  6. Step 6: Final answer
    x = 2,020,580.72

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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.