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Finding the Third Proportional to 4,151,738 and 9,121,396

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Solution

The third proportional to 4,151,738 and 9,121,396 is: 20,039,767.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,151,738 : 9,121,396 = 9,121,396 : x
  2. Step 2: Convert to fraction form
    4,151,738/9,121,396 = 9,121,396/x
  3. Step 3: Cross multiply
    4,151,738x = 9,121,396 × 9,121,396
  4. Step 4: Simplify right side
    4,151,738x = 83,199,864,988,816
  5. Step 5: Solve for x
    x = 83,199,864,988,816/4,151,738
  6. Step 6: Final answer
    x = 20,039,767.68

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.