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Finding the Third Proportional to 7,221,982 and 11,218,617

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Solution

The third proportional to 7,221,982 and 11,218,617 is: 17,426,984.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221,982 : 11,218,617 = 11,218,617 : x
  2. Step 2: Convert to fraction form
    7,221,982/11,218,617 = 11,218,617/x
  3. Step 3: Cross multiply
    7,221,982x = 11,218,617 × 11,218,617
  4. Step 4: Simplify right side
    7,221,982x = 125,857,367,392,689
  5. Step 5: Solve for x
    x = 125,857,367,392,689/7,221,982
  6. Step 6: Final answer
    x = 17,426,984.36

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.