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Finding the Fourth Proportional to 469,471.85, 647,811.74 and 278,447.93

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Solution

The fourth proportional to 469,471.85, 647,811.74 and 278,447.93 is: 384,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,471.85 : 647,811.74 = 278,447.93 : x
  2. Step 2: Convert to fraction form
    469,471.85/647,811.74 = 278,447.93/x
  3. Step 3: Cross multiply
    469,471.85x = 647,811.74 × 278,447.93
  4. Step 4: Simplify right side
    469,471.85x = 180,381,838,032.70
  5. Step 5: Solve for x
    x = 180,381,838,032.70/469,471.85
  6. Step 6: Final answer
    x = 384,222.91

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