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Finding the Third Proportional to 1,272,640.36 and 1,780,174.97

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Solution

The third proportional to 1,272,640.36 and 1,780,174.97 is: 2,490,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,640.36 : 1,780,174.97 = 1,780,174.97 : x
  2. Step 2: Convert to fraction form
    1,272,640.36/1,780,174.97 = 1,780,174.97/x
  3. Step 3: Cross multiply
    1,272,640.36x = 1,780,174.97 × 1,780,174.97
  4. Step 4: Simplify right side
    1,272,640.36x = 3,169,022,919,364.06
  5. Step 5: Solve for x
    x = 3,169,022,919,364.06/1,272,640.36
  6. Step 6: Final answer
    x = 2,490,116.63

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.