Home / 721,511.21-995,527.46-431,079.20

Finding the Fourth Proportional to 721,511.21, 995,527.46 and 431,079.20

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Solution

The fourth proportional to 721,511.21, 995,527.46 and 431,079.20 is: 594,794.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,511.21 : 995,527.46 = 431,079.20 : x
  2. Step 2: Convert to fraction form
    721,511.21/995,527.46 = 431,079.20/x
  3. Step 3: Cross multiply
    721,511.21x = 995,527.46 × 431,079.20
  4. Step 4: Simplify right side
    721,511.21x = 429,151,173,901.80
  5. Step 5: Solve for x
    x = 429,151,173,901.80/721,511.21
  6. Step 6: Final answer
    x = 594,794.88

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Double scale
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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.