Home / 725,421.20-1,087,613.40-325,734.80

Finding the Fourth Proportional to 725,421.20, 1,087,613.40 and 325,734.80

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Solution

The fourth proportional to 725,421.20, 1,087,613.40 and 325,734.80 is: 488,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,421.20 : 1,087,613.40 = 325,734.80 : x
  2. Step 2: Convert to fraction form
    725,421.20/1,087,613.40 = 325,734.80/x
  3. Step 3: Cross multiply
    725,421.20x = 1,087,613.40 × 325,734.80
  4. Step 4: Simplify right side
    725,421.20x = 354,273,533,326.32
  5. Step 5: Solve for x
    x = 354,273,533,326.32/725,421.20
  6. Step 6: Final answer
    x = 488,369.42

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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.