Home / 721,109.26-995,437.19-449,311.45

Finding the Fourth Proportional to 721,109.26, 995,437.19 and 449,311.45

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Solution

The fourth proportional to 721,109.26, 995,437.19 and 449,311.45 is: 620,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,109.26 : 995,437.19 = 449,311.45 : x
  2. Step 2: Convert to fraction form
    721,109.26/995,437.19 = 449,311.45/x
  3. Step 3: Cross multiply
    721,109.26x = 995,437.19 × 449,311.45
  4. Step 4: Simplify right side
    721,109.26x = 447,261,322,245.64
  5. Step 5: Solve for x
    x = 447,261,322,245.64/721,109.26
  6. Step 6: Final answer
    x = 620,240.71

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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.