Home / 725,720.57-1,001,491.77-399,054.97

Finding the Fourth Proportional to 725,720.57, 1,001,491.77 and 399,054.97

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Solution

The fourth proportional to 725,720.57, 1,001,491.77 and 399,054.97 is: 550,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,720.57 : 1,001,491.77 = 399,054.97 : x
  2. Step 2: Convert to fraction form
    725,720.57/1,001,491.77 = 399,054.97/x
  3. Step 3: Cross multiply
    725,720.57x = 1,001,491.77 × 399,054.97
  4. Step 4: Simplify right side
    725,720.57x = 399,650,268,232.60
  5. Step 5: Solve for x
    x = 399,650,268,232.60/725,720.57
  6. Step 6: Final answer
    x = 550,694.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.