Home / 725,423.20-1,087,616.40-325,736.80

Finding the Fourth Proportional to 725,423.20, 1,087,616.40 and 325,736.80

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Solution

The fourth proportional to 725,423.20, 1,087,616.40 and 325,736.80 is: 488,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,423.20 : 1,087,616.40 = 325,736.80 : x
  2. Step 2: Convert to fraction form
    725,423.20/1,087,616.40 = 325,736.80/x
  3. Step 3: Cross multiply
    725,423.20x = 1,087,616.40 × 325,736.80
  4. Step 4: Simplify right side
    725,423.20x = 354,276,685,763.52
  5. Step 5: Solve for x
    x = 354,276,685,763.52/725,423.20
  6. Step 6: Final answer
    x = 488,372.42

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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.