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Finding the Third Proportional to 340,540 and 515,550

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Solution

The third proportional to 340,540 and 515,550 is: 780,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,540 : 515,550 = 515,550 : x
  2. Step 2: Convert to fraction form
    340,540/515,550 = 515,550/x
  3. Step 3: Cross multiply
    340,540x = 515,550 × 515,550
  4. Step 4: Simplify right side
    340,540x = 265,791,802,500
  5. Step 5: Solve for x
    x = 265,791,802,500/340,540
  6. Step 6: Final answer
    x = 780,500.98

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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.