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Finding the Third Proportional to 488,218.50 and 739,212.75

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Solution

The third proportional to 488,218.50 and 739,212.75 is: 1,119,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,218.50 : 739,212.75 = 739,212.75 : x
  2. Step 2: Convert to fraction form
    488,218.50/739,212.75 = 739,212.75/x
  3. Step 3: Cross multiply
    488,218.50x = 739,212.75 × 739,212.75
  4. Step 4: Simplify right side
    488,218.50x = 546,435,489,762.56
  5. Step 5: Solve for x
    x = 546,435,489,762.56/488,218.50
  6. Step 6: Final answer
    x = 1,119,243.72

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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.