Home / 928,998.49-1,393,163.60-321,621.88

Finding the Fourth Proportional to 928,998.49, 1,393,163.60 and 321,621.88

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Solution

The fourth proportional to 928,998.49, 1,393,163.60 and 321,621.88 is: 482,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,998.49 : 1,393,163.60 = 321,621.88 : x
  2. Step 2: Convert to fraction form
    928,998.49/1,393,163.60 = 321,621.88/x
  3. Step 3: Cross multiply
    928,998.49x = 1,393,163.60 × 321,621.88
  4. Step 4: Simplify right side
    928,998.49x = 448,071,896,179.57
  5. Step 5: Solve for x
    x = 448,071,896,179.57/928,998.49
  6. Step 6: Final answer
    x = 482,317.14

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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.