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Finding the Fourth Proportional to 420,299.68, 580,227.60 and 324,591.52

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Solution

The fourth proportional to 420,299.68, 580,227.60 and 324,591.52 is: 448,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,299.68 : 580,227.60 = 324,591.52 : x
  2. Step 2: Convert to fraction form
    420,299.68/580,227.60 = 324,591.52/x
  3. Step 3: Cross multiply
    420,299.68x = 580,227.60 × 324,591.52
  4. Step 4: Simplify right side
    420,299.68x = 188,336,958,629.95
  5. Step 5: Solve for x
    x = 188,336,958,629.95/420,299.68
  6. Step 6: Final answer
    x = 448,101.60

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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.