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Finding the Third Proportional to 485,654 and 990,580

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Solution

The third proportional to 485,654 and 990,580 is: 2,020,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,654 : 990,580 = 990,580 : x
  2. Step 2: Convert to fraction form
    485,654/990,580 = 990,580/x
  3. Step 3: Cross multiply
    485,654x = 990,580 × 990,580
  4. Step 4: Simplify right side
    485,654x = 981,248,736,400
  5. Step 5: Solve for x
    x = 981,248,736,400/485,654
  6. Step 6: Final answer
    x = 2,020,468.76

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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.