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Finding the Third Proportional to 512,200 and 751,687

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Solution

The third proportional to 512,200 and 751,687 is: 1,103,149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,200 : 751,687 = 751,687 : x
  2. Step 2: Convert to fraction form
    512,200/751,687 = 751,687/x
  3. Step 3: Cross multiply
    512,200x = 751,687 × 751,687
  4. Step 4: Simplify right side
    512,200x = 565,033,345,969
  5. Step 5: Solve for x
    x = 565,033,345,969/512,200
  6. Step 6: Final answer
    x = 1,103,149.84

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.