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Finding the Third Proportional to 5,469,890 and 11,989,456

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Solution

The third proportional to 5,469,890 and 11,989,456 is: 26,279,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,469,890 : 11,989,456 = 11,989,456 : x
  2. Step 2: Convert to fraction form
    5,469,890/11,989,456 = 11,989,456/x
  3. Step 3: Cross multiply
    5,469,890x = 11,989,456 × 11,989,456
  4. Step 4: Simplify right side
    5,469,890x = 143,747,055,175,936
  5. Step 5: Solve for x
    x = 143,747,055,175,936/5,469,890
  6. Step 6: Final answer
    x = 26,279,697.61

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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.