Home / 721,439.59-995,615.94-399,144.44

Finding the Fourth Proportional to 721,439.59, 995,615.94 and 399,144.44

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Solution

The fourth proportional to 721,439.59, 995,615.94 and 399,144.44 is: 550,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,439.59 : 995,615.94 = 399,144.44 : x
  2. Step 2: Convert to fraction form
    721,439.59/995,615.94 = 399,144.44/x
  3. Step 3: Cross multiply
    721,439.59x = 995,615.94 × 399,144.44
  4. Step 4: Simplify right side
    721,439.59x = 397,394,564,337.33
  5. Step 5: Solve for x
    x = 397,394,564,337.33/721,439.59
  6. Step 6: Final answer
    x = 550,835.54

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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.