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Finding the Third Proportional to 7,971,000 and 12,689,551

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Solution

The third proportional to 7,971,000 and 12,689,551 is: 20,201,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971,000 : 12,689,551 = 12,689,551 : x
  2. Step 2: Convert to fraction form
    7,971,000/12,689,551 = 12,689,551/x
  3. Step 3: Cross multiply
    7,971,000x = 12,689,551 × 12,689,551
  4. Step 4: Simplify right side
    7,971,000x = 161,024,704,581,601
  5. Step 5: Solve for x
    x = 161,024,704,581,601/7,971,000
  6. Step 6: Final answer
    x = 20,201,317.85

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.