Home / 725,587.20-1,087,862.40-325,900.80

Finding the Fourth Proportional to 725,587.20, 1,087,862.40 and 325,900.80

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Solution

The fourth proportional to 725,587.20, 1,087,862.40 and 325,900.80 is: 488,618.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,587.20 : 1,087,862.40 = 325,900.80 : x
  2. Step 2: Convert to fraction form
    725,587.20/1,087,862.40 = 325,900.80/x
  3. Step 3: Cross multiply
    725,587.20x = 1,087,862.40 × 325,900.80
  4. Step 4: Simplify right side
    725,587.20x = 354,535,226,449.92
  5. Step 5: Solve for x
    x = 354,535,226,449.92/725,587.20
  6. Step 6: Final answer
    x = 488,618.36

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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.