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Finding the Third Proportional to 339,079.50 and 512,986.50

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Solution

The third proportional to 339,079.50 and 512,986.50 is: 776,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,079.50 : 512,986.50 = 512,986.50 : x
  2. Step 2: Convert to fraction form
    339,079.50/512,986.50 = 512,986.50/x
  3. Step 3: Cross multiply
    339,079.50x = 512,986.50 × 512,986.50
  4. Step 4: Simplify right side
    339,079.50x = 263,155,149,182.25
  5. Step 5: Solve for x
    x = 263,155,149,182.25/339,079.50
  6. Step 6: Final answer
    x = 776,086.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.