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Finding the Fourth Proportional to 465,429.86, 642,345.34 and 281,769.66

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Solution

The fourth proportional to 465,429.86, 642,345.34 and 281,769.66 is: 388,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,429.86 : 642,345.34 = 281,769.66 : x
  2. Step 2: Convert to fraction form
    465,429.86/642,345.34 = 281,769.66/x
  3. Step 3: Cross multiply
    465,429.86x = 642,345.34 × 281,769.66
  4. Step 4: Simplify right side
    465,429.86x = 180,993,427,652.46
  5. Step 5: Solve for x
    x = 180,993,427,652.46/465,429.86
  6. Step 6: Final answer
    x = 388,873.69

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