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Finding the Third Proportional to 691,170.47 and 1,515,200.55

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Solution

The third proportional to 691,170.47 and 1,515,200.55 is: 3,321,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,170.47 : 1,515,200.55 = 1,515,200.55 : x
  2. Step 2: Convert to fraction form
    691,170.47/1,515,200.55 = 1,515,200.55/x
  3. Step 3: Cross multiply
    691,170.47x = 1,515,200.55 × 1,515,200.55
  4. Step 4: Simplify right side
    691,170.47x = 2,295,832,720,925.31
  5. Step 5: Solve for x
    x = 2,295,832,720,925.31/691,170.47
  6. Step 6: Final answer
    x = 3,321,659.16

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.