Home / 721,527.36-995,566.20-399,177.24

Finding the Fourth Proportional to 721,527.36, 995,566.20 and 399,177.24

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Solution

The fourth proportional to 721,527.36, 995,566.20 and 399,177.24 is: 550,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,527.36 : 995,566.20 = 399,177.24 : x
  2. Step 2: Convert to fraction form
    721,527.36/995,566.20 = 399,177.24/x
  3. Step 3: Cross multiply
    721,527.36x = 995,566.20 × 399,177.24
  4. Step 4: Simplify right side
    721,527.36x = 397,407,367,953.29
  5. Step 5: Solve for x
    x = 397,407,367,953.29/721,527.36
  6. Step 6: Final answer
    x = 550,786.28

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.