Home / 428,669.09-642,872.32-296,399.33

Finding the Fourth Proportional to 428,669.09, 642,872.32 and 296,399.33

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Solution

The fourth proportional to 428,669.09, 642,872.32 and 296,399.33 is: 444,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,669.09 : 642,872.32 = 296,399.33 : x
  2. Step 2: Convert to fraction form
    428,669.09/642,872.32 = 296,399.33/x
  3. Step 3: Cross multiply
    428,669.09x = 642,872.32 × 296,399.33
  4. Step 4: Simplify right side
    428,669.09x = 190,546,925,789.73
  5. Step 5: Solve for x
    x = 190,546,925,789.73/428,669.09
  6. Step 6: Final answer
    x = 444,508.20

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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.