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Finding the Fourth Proportional to 529,143.26, 730,231.29 and 287,439.67

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Solution

The fourth proportional to 529,143.26, 730,231.29 and 287,439.67 is: 396,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,143.26 : 730,231.29 = 287,439.67 : x
  2. Step 2: Convert to fraction form
    529,143.26/730,231.29 = 287,439.67/x
  3. Step 3: Cross multiply
    529,143.26x = 730,231.29 × 287,439.67
  4. Step 4: Simplify right side
    529,143.26x = 209,897,441,021.27
  5. Step 5: Solve for x
    x = 209,897,441,021.27/529,143.26
  6. Step 6: Final answer
    x = 396,674.13

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