Home / 725,015.20-1,087,004.40-325,328.80

Finding the Fourth Proportional to 725,015.20, 1,087,004.40 and 325,328.80

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Solution

The fourth proportional to 725,015.20, 1,087,004.40 and 325,328.80 is: 487,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,015.20 : 1,087,004.40 = 325,328.80 : x
  2. Step 2: Convert to fraction form
    725,015.20/1,087,004.40 = 325,328.80/x
  3. Step 3: Cross multiply
    725,015.20x = 1,087,004.40 × 325,328.80
  4. Step 4: Simplify right side
    725,015.20x = 353,633,837,046.72
  5. Step 5: Solve for x
    x = 353,633,837,046.72/725,015.20
  6. Step 6: Final answer
    x = 487,760.58

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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.