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Finding the Third Proportional to 685,080 and 1,472,220

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Solution

The third proportional to 685,080 and 1,472,220 is: 3,163,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,080 : 1,472,220 = 1,472,220 : x
  2. Step 2: Convert to fraction form
    685,080/1,472,220 = 1,472,220/x
  3. Step 3: Cross multiply
    685,080x = 1,472,220 × 1,472,220
  4. Step 4: Simplify right side
    685,080x = 2,167,431,728,400
  5. Step 5: Solve for x
    x = 2,167,431,728,400/685,080
  6. Step 6: Final answer
    x = 3,163,764.42

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.