Home / 1,332,313.35-1,998,451.53-321,426.78

Finding the Fourth Proportional to 1,332,313.35, 1,998,451.53 and 321,426.78

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Solution

The fourth proportional to 1,332,313.35, 1,998,451.53 and 321,426.78 is: 482,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,313.35 : 1,998,451.53 = 321,426.78 : x
  2. Step 2: Convert to fraction form
    1,332,313.35/1,998,451.53 = 321,426.78/x
  3. Step 3: Cross multiply
    1,332,313.35x = 1,998,451.53 × 321,426.78
  4. Step 4: Simplify right side
    1,332,313.35x = 642,355,840,273.97
  5. Step 5: Solve for x
    x = 642,355,840,273.97/1,332,313.35
  6. Step 6: Final answer
    x = 482,135.71

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1.5x scale

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.