Home / 829,400.75-1,244,400.64-289,736.76

Finding the Fourth Proportional to 829,400.75, 1,244,400.64 and 289,736.76

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Solution

The fourth proportional to 829,400.75, 1,244,400.64 and 289,736.76 is: 434,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,400.75 : 1,244,400.64 = 289,736.76 : x
  2. Step 2: Convert to fraction form
    829,400.75/1,244,400.64 = 289,736.76/x
  3. Step 3: Cross multiply
    829,400.75x = 1,244,400.64 × 289,736.76
  4. Step 4: Simplify right side
    829,400.75x = 360,548,613,517.69
  5. Step 5: Solve for x
    x = 360,548,613,517.69/829,400.75
  6. Step 6: Final answer
    x = 434,709.78

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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.