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Finding the Third Proportional to 553,990 and 1,192,720

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Solution

The third proportional to 553,990 and 1,192,720 is: 2,567,882.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,990 : 1,192,720 = 1,192,720 : x
  2. Step 2: Convert to fraction form
    553,990/1,192,720 = 1,192,720/x
  3. Step 3: Cross multiply
    553,990x = 1,192,720 × 1,192,720
  4. Step 4: Simplify right side
    553,990x = 1,422,580,998,400
  5. Step 5: Solve for x
    x = 1,422,580,998,400/553,990
  6. Step 6: Final answer
    x = 2,567,882.09

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.