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Finding the Third Proportional to 323,620 and 485,429.75

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Solution

The third proportional to 323,620 and 485,429.75 is: 728,144.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,620 : 485,429.75 = 485,429.75 : x
  2. Step 2: Convert to fraction form
    323,620/485,429.75 = 485,429.75/x
  3. Step 3: Cross multiply
    323,620x = 485,429.75 × 485,429.75
  4. Step 4: Simplify right side
    323,620x = 235,642,042,185.06
  5. Step 5: Solve for x
    x = 235,642,042,185.06/323,620
  6. Step 6: Final answer
    x = 728,144.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.