Home / 721,338.26-995,439.31-394,648.18

Finding the Fourth Proportional to 721,338.26, 995,439.31 and 394,648.18

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Solution

The fourth proportional to 721,338.26, 995,439.31 and 394,648.18 is: 544,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,338.26 : 995,439.31 = 394,648.18 : x
  2. Step 2: Convert to fraction form
    721,338.26/995,439.31 = 394,648.18/x
  3. Step 3: Cross multiply
    721,338.26x = 995,439.31 × 394,648.18
  4. Step 4: Simplify right side
    721,338.26x = 392,848,311,991.96
  5. Step 5: Solve for x
    x = 392,848,311,991.96/721,338.26
  6. Step 6: Final answer
    x = 544,610.39

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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.