Home / 521,676.68-719,921.28-303,879.76

Finding the Fourth Proportional to 521,676.68, 719,921.28 and 303,879.76

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Solution

The fourth proportional to 521,676.68, 719,921.28 and 303,879.76 is: 419,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,676.68 : 719,921.28 = 303,879.76 : x
  2. Step 2: Convert to fraction form
    521,676.68/719,921.28 = 303,879.76/x
  3. Step 3: Cross multiply
    521,676.68x = 719,921.28 × 303,879.76
  4. Step 4: Simplify right side
    521,676.68x = 218,769,505,785.29
  5. Step 5: Solve for x
    x = 218,769,505,785.29/521,676.68
  6. Step 6: Final answer
    x = 419,358.42

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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.