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Finding the Third Proportional to 372,720 and 818,659

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Solution

The third proportional to 372,720 and 818,659 is: 1,798,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,720 : 818,659 = 818,659 : x
  2. Step 2: Convert to fraction form
    372,720/818,659 = 818,659/x
  3. Step 3: Cross multiply
    372,720x = 818,659 × 818,659
  4. Step 4: Simplify right side
    372,720x = 670,202,558,281
  5. Step 5: Solve for x
    x = 670,202,558,281/372,720
  6. Step 6: Final answer
    x = 1,798,139.51

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.