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Finding the Third Proportional to 3,940,653 and 8,489,208

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Solution

The third proportional to 3,940,653 and 8,489,208 is: 18,287,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940,653 : 8,489,208 = 8,489,208 : x
  2. Step 2: Convert to fraction form
    3,940,653/8,489,208 = 8,489,208/x
  3. Step 3: Cross multiply
    3,940,653x = 8,489,208 × 8,489,208
  4. Step 4: Simplify right side
    3,940,653x = 72,066,652,467,264
  5. Step 5: Solve for x
    x = 72,066,652,467,264/3,940,653
  6. Step 6: Final answer
    x = 18,287,997.56

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.