Home / 721,383.45-995,519.01-449,561.22

Finding the Fourth Proportional to 721,383.45, 995,519.01 and 449,561.22

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Solution

The fourth proportional to 721,383.45, 995,519.01 and 449,561.22 is: 620,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,383.45 : 995,519.01 = 449,561.22 : x
  2. Step 2: Convert to fraction form
    721,383.45/995,519.01 = 449,561.22/x
  3. Step 3: Cross multiply
    721,383.45x = 995,519.01 × 449,561.22
  4. Step 4: Simplify right side
    721,383.45x = 447,546,740,668.79
  5. Step 5: Solve for x
    x = 447,546,740,668.79/721,383.45
  6. Step 6: Final answer
    x = 620,400.62

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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.