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Finding the Third Proportional to 455,612 and 998,980

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Solution

The third proportional to 455,612 and 998,980 is: 2,190,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,612 : 998,980 = 998,980 : x
  2. Step 2: Convert to fraction form
    455,612/998,980 = 998,980/x
  3. Step 3: Cross multiply
    455,612x = 998,980 × 998,980
  4. Step 4: Simplify right side
    455,612x = 997,961,040,400
  5. Step 5: Solve for x
    x = 997,961,040,400/455,612
  6. Step 6: Final answer
    x = 2,190,374.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.