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Finding the Third Proportional to 998,490.80 and 2,156,659.17

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Solution

The third proportional to 998,490.80 and 2,156,659.17 is: 4,658,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,490.80 : 2,156,659.17 = 2,156,659.17 : x
  2. Step 2: Convert to fraction form
    998,490.80/2,156,659.17 = 2,156,659.17/x
  3. Step 3: Cross multiply
    998,490.80x = 2,156,659.17 × 2,156,659.17
  4. Step 4: Simplify right side
    998,490.80x = 4,651,178,783,632.56
  5. Step 5: Solve for x
    x = 4,651,178,783,632.56/998,490.80
  6. Step 6: Final answer
    x = 4,658,208.97

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.