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Finding the Third Proportional to 7,880,544 and 11,979,720

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Solution

The third proportional to 7,880,544 and 11,979,720 is: 18,211,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880,544 : 11,979,720 = 11,979,720 : x
  2. Step 2: Convert to fraction form
    7,880,544/11,979,720 = 11,979,720/x
  3. Step 3: Cross multiply
    7,880,544x = 11,979,720 × 11,979,720
  4. Step 4: Simplify right side
    7,880,544x = 143,513,691,278,400
  5. Step 5: Solve for x
    x = 143,513,691,278,400/7,880,544
  6. Step 6: Final answer
    x = 18,211,140.15

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.