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Finding the Third Proportional to 630,620 and 979,149

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Solution

The third proportional to 630,620 and 979,149 is: 1,520,301.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,620 : 979,149 = 979,149 : x
  2. Step 2: Convert to fraction form
    630,620/979,149 = 979,149/x
  3. Step 3: Cross multiply
    630,620x = 979,149 × 979,149
  4. Step 4: Simplify right side
    630,620x = 958,732,764,201
  5. Step 5: Solve for x
    x = 958,732,764,201/630,620
  6. Step 6: Final answer
    x = 1,520,301.87

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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.