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Finding the Third Proportional to 8,490,917 and 18,649,891

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Solution

The third proportional to 8,490,917 and 18,649,891 is: 40,963,589.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490,917 : 18,649,891 = 18,649,891 : x
  2. Step 2: Convert to fraction form
    8,490,917/18,649,891 = 18,649,891/x
  3. Step 3: Cross multiply
    8,490,917x = 18,649,891 × 18,649,891
  4. Step 4: Simplify right side
    8,490,917x = 347,818,434,311,881
  5. Step 5: Solve for x
    x = 347,818,434,311,881/8,490,917
  6. Step 6: Final answer
    x = 40,963,589.01

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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.