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Finding the Third Proportional to 455,885 and 992,040

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Solution

The third proportional to 455,885 and 992,040 is: 2,158,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,885 : 992,040 = 992,040 : x
  2. Step 2: Convert to fraction form
    455,885/992,040 = 992,040/x
  3. Step 3: Cross multiply
    455,885x = 992,040 × 992,040
  4. Step 4: Simplify right side
    455,885x = 984,143,361,600
  5. Step 5: Solve for x
    x = 984,143,361,600/455,885
  6. Step 6: Final answer
    x = 2,158,753.55

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.