Home / 639,558.46-959,016.78-212,944.02

Finding the Fourth Proportional to 639,558.46, 959,016.78 and 212,944.02

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Solution

The fourth proportional to 639,558.46, 959,016.78 and 212,944.02 is: 319,309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,558.46 : 959,016.78 = 212,944.02 : x
  2. Step 2: Convert to fraction form
    639,558.46/959,016.78 = 212,944.02/x
  3. Step 3: Cross multiply
    639,558.46x = 959,016.78 × 212,944.02
  4. Step 4: Simplify right side
    639,558.46x = 204,216,888,380.66
  5. Step 5: Solve for x
    x = 204,216,888,380.66/639,558.46
  6. Step 6: Final answer
    x = 319,309.18

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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.