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Finding the Fourth Proportional to 721,294.94, 995,386.92 and 394,610.60

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Solution

The fourth proportional to 721,294.94, 995,386.92 and 394,610.60 is: 544,562.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,294.94 : 995,386.92 = 394,610.60 : x
  2. Step 2: Convert to fraction form
    721,294.94/995,386.92 = 394,610.60/x
  3. Step 3: Cross multiply
    721,294.94x = 995,386.92 × 394,610.60
  4. Step 4: Simplify right side
    721,294.94x = 392,790,229,733.35
  5. Step 5: Solve for x
    x = 392,790,229,733.35/721,294.94
  6. Step 6: Final answer
    x = 544,562.57

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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.