Home / 815,142.09-1,222,769.30-341,350.41

Finding the Fourth Proportional to 815,142.09, 1,222,769.30 and 341,350.41

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Solution

The fourth proportional to 815,142.09, 1,222,769.30 and 341,350.41 is: 512,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,142.09 : 1,222,769.30 = 341,350.41 : x
  2. Step 2: Convert to fraction form
    815,142.09/1,222,769.30 = 341,350.41/x
  3. Step 3: Cross multiply
    815,142.09x = 1,222,769.30 × 341,350.41
  4. Step 4: Simplify right side
    815,142.09x = 417,392,800,183.66
  5. Step 5: Solve for x
    x = 417,392,800,183.66/815,142.09
  6. Step 6: Final answer
    x = 512,049.13

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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.