Home / 725,589.20-1,087,865.40-325,902.80

Finding the Fourth Proportional to 725,589.20, 1,087,865.40 and 325,902.80

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Solution

The fourth proportional to 725,589.20, 1,087,865.40 and 325,902.80 is: 488,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,589.20 : 1,087,865.40 = 325,902.80 : x
  2. Step 2: Convert to fraction form
    725,589.20/1,087,865.40 = 325,902.80/x
  3. Step 3: Cross multiply
    725,589.20x = 1,087,865.40 × 325,902.80
  4. Step 4: Simplify right side
    725,589.20x = 354,538,379,883.12
  5. Step 5: Solve for x
    x = 354,538,379,883.12/725,589.20
  6. Step 6: Final answer
    x = 488,621.36

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1.5x scale

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.