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Finding the Third Proportional to 8,639,540 and 18,508,722

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Solution

The third proportional to 8,639,540 and 18,508,722 is: 39,651,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639,540 : 18,508,722 = 18,508,722 : x
  2. Step 2: Convert to fraction form
    8,639,540/18,508,722 = 18,508,722/x
  3. Step 3: Cross multiply
    8,639,540x = 18,508,722 × 18,508,722
  4. Step 4: Simplify right side
    8,639,540x = 342,572,790,073,284
  5. Step 5: Solve for x
    x = 342,572,790,073,284/8,639,540
  6. Step 6: Final answer
    x = 39,651,739.57

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.