Home / 721,562.38-995,861.18-415,579.21

Finding the Fourth Proportional to 721,562.38, 995,861.18 and 415,579.21

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Solution

The fourth proportional to 721,562.38, 995,861.18 and 415,579.21 is: 573,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,562.38 : 995,861.18 = 415,579.21 : x
  2. Step 2: Convert to fraction form
    721,562.38/995,861.18 = 415,579.21/x
  3. Step 3: Cross multiply
    721,562.38x = 995,861.18 × 415,579.21
  4. Step 4: Simplify right side
    721,562.38x = 413,859,202,454.07
  5. Step 5: Solve for x
    x = 413,859,202,454.07/721,562.38
  6. Step 6: Final answer
    x = 573,559.84

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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.