Home / 485,889.60-670,839.84-304,849.92

Finding the Fourth Proportional to 485,889.60, 670,839.84 and 304,849.92

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Solution

The fourth proportional to 485,889.60, 670,839.84 and 304,849.92 is: 420,888.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,889.60 : 670,839.84 = 304,849.92 : x
  2. Step 2: Convert to fraction form
    485,889.60/670,839.84 = 304,849.92/x
  3. Step 3: Cross multiply
    485,889.60x = 670,839.84 × 304,849.92
  4. Step 4: Simplify right side
    485,889.60x = 204,505,471,556.81
  5. Step 5: Solve for x
    x = 204,505,471,556.81/485,889.60
  6. Step 6: Final answer
    x = 420,888.76

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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.