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Finding the Third Proportional to 418,894.50 and 647,296.50

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Solution

The third proportional to 418,894.50 and 647,296.50 is: 1,000,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,894.50 : 647,296.50 = 647,296.50 : x
  2. Step 2: Convert to fraction form
    418,894.50/647,296.50 = 647,296.50/x
  3. Step 3: Cross multiply
    418,894.50x = 647,296.50 × 647,296.50
  4. Step 4: Simplify right side
    418,894.50x = 418,992,758,912.25
  5. Step 5: Solve for x
    x = 418,992,758,912.25/418,894.50
  6. Step 6: Final answer
    x = 1,000,234.57

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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.