Home / 928,970.60-1,393,121.45-321,593.72

Finding the Fourth Proportional to 928,970.60, 1,393,121.45 and 321,593.72

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Solution

The fourth proportional to 928,970.60, 1,393,121.45 and 321,593.72 is: 482,274.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,970.60 : 1,393,121.45 = 321,593.72 : x
  2. Step 2: Convert to fraction form
    928,970.60/1,393,121.45 = 321,593.72/x
  3. Step 3: Cross multiply
    928,970.60x = 1,393,121.45 × 321,593.72
  4. Step 4: Simplify right side
    928,970.60x = 448,019,109,517.29
  5. Step 5: Solve for x
    x = 448,019,109,517.29/928,970.60
  6. Step 6: Final answer
    x = 482,274.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.