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Finding the Fourth Proportional to 721,292.96, 995,384.14 and 394,608.60

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Solution

The fourth proportional to 721,292.96, 995,384.14 and 394,608.60 is: 544,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,292.96 : 995,384.14 = 394,608.60 : x
  2. Step 2: Convert to fraction form
    721,292.96/995,384.14 = 394,608.60/x
  3. Step 3: Cross multiply
    721,292.96x = 995,384.14 × 394,608.60
  4. Step 4: Simplify right side
    721,292.96x = 392,787,141,947.60
  5. Step 5: Solve for x
    x = 392,787,141,947.60/721,292.96
  6. Step 6: Final answer
    x = 544,559.79

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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.