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Finding the Third Proportional to 8,418,498 and 13,120,551

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Solution

The third proportional to 8,418,498 and 13,120,551 is: 20,448,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418,498 : 13,120,551 = 13,120,551 : x
  2. Step 2: Convert to fraction form
    8,418,498/13,120,551 = 13,120,551/x
  3. Step 3: Cross multiply
    8,418,498x = 13,120,551 × 13,120,551
  4. Step 4: Simplify right side
    8,418,498x = 172,148,858,543,601
  5. Step 5: Solve for x
    x = 172,148,858,543,601/8,418,498
  6. Step 6: Final answer
    x = 20,448,880.38

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.