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Finding the Fourth Proportional to 721,512.71, 995,529.53 and 431,080.70

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Solution

The fourth proportional to 721,512.71, 995,529.53 and 431,080.70 is: 594,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,512.71 : 995,529.53 = 431,080.70 : x
  2. Step 2: Convert to fraction form
    721,512.71/995,529.53 = 431,080.70/x
  3. Step 3: Cross multiply
    721,512.71x = 995,529.53 × 431,080.70
  4. Step 4: Simplify right side
    721,512.71x = 429,153,559,530.02
  5. Step 5: Solve for x
    x = 429,153,559,530.02/721,512.71
  6. Step 6: Final answer
    x = 594,796.95

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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.