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Finding the Third Proportional to 18,384,423 and 40,415,790

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Solution

The third proportional to 18,384,423 and 40,415,790 is: 88,848,917.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384,423 : 40,415,790 = 40,415,790 : x
  2. Step 2: Convert to fraction form
    18,384,423/40,415,790 = 40,415,790/x
  3. Step 3: Cross multiply
    18,384,423x = 40,415,790 × 40,415,790
  4. Step 4: Simplify right side
    18,384,423x = 1,633,436,081,324,100
  5. Step 5: Solve for x
    x = 1,633,436,081,324,100/18,384,423
  6. Step 6: Final answer
    x = 88,848,917.44

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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.