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Finding the Third Proportional to 8,449,989 and 18,246,990

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Solution

The third proportional to 8,449,989 and 18,246,990 is: 39,402,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449,989 : 18,246,990 = 18,246,990 : x
  2. Step 2: Convert to fraction form
    8,449,989/18,246,990 = 18,246,990/x
  3. Step 3: Cross multiply
    8,449,989x = 18,246,990 × 18,246,990
  4. Step 4: Simplify right side
    8,449,989x = 332,952,644,060,100
  5. Step 5: Solve for x
    x = 332,952,644,060,100/8,449,989
  6. Step 6: Final answer
    x = 39,402,731.06

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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.