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Finding the Fourth Proportional to 639,826.48, 960,330.12 and 324,504.82

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Solution

The fourth proportional to 639,826.48, 960,330.12 and 324,504.82 is: 487,056.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,826.48 : 960,330.12 = 324,504.82 : x
  2. Step 2: Convert to fraction form
    639,826.48/960,330.12 = 324,504.82/x
  3. Step 3: Cross multiply
    639,826.48x = 960,330.12 × 324,504.82
  4. Step 4: Simplify right side
    639,826.48x = 311,631,752,731.18
  5. Step 5: Solve for x
    x = 311,631,752,731.18/639,826.48
  6. Step 6: Final answer
    x = 487,056.67

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