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Finding the Fourth Proportional to 621,633.70, 857,853.25 and 349,701.78

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Solution

The fourth proportional to 621,633.70, 857,853.25 and 349,701.78 is: 482,587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,633.70 : 857,853.25 = 349,701.78 : x
  2. Step 2: Convert to fraction form
    621,633.70/857,853.25 = 349,701.78/x
  3. Step 3: Cross multiply
    621,633.70x = 857,853.25 × 349,701.78
  4. Step 4: Simplify right side
    621,633.70x = 299,992,810,846.48
  5. Step 5: Solve for x
    x = 299,992,810,846.48/621,633.70
  6. Step 6: Final answer
    x = 482,587.75

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