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Finding the Third Proportional to 8,728,470 and 18,967,788

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Solution

The third proportional to 8,728,470 and 18,967,788 is: 41,218,791.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728,470 : 18,967,788 = 18,967,788 : x
  2. Step 2: Convert to fraction form
    8,728,470/18,967,788 = 18,967,788/x
  3. Step 3: Cross multiply
    8,728,470x = 18,967,788 × 18,967,788
  4. Step 4: Simplify right side
    8,728,470x = 359,776,981,612,944
  5. Step 5: Solve for x
    x = 359,776,981,612,944/8,728,470
  6. Step 6: Final answer
    x = 41,218,791.11

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.