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Finding the Third Proportional to 4,247,404 and 9,170,990

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Solution

The third proportional to 4,247,404 and 9,170,990 is: 19,801,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,247,404 : 9,170,990 = 9,170,990 : x
  2. Step 2: Convert to fraction form
    4,247,404/9,170,990 = 9,170,990/x
  3. Step 3: Cross multiply
    4,247,404x = 9,170,990 × 9,170,990
  4. Step 4: Simplify right side
    4,247,404x = 84,107,057,580,100
  5. Step 5: Solve for x
    x = 84,107,057,580,100/4,247,404
  6. Step 6: Final answer
    x = 19,801,991.42

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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.