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Finding the Fourth Proportional to 429,422.80, 644,134.20 and 252,275.80

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Solution

The fourth proportional to 429,422.80, 644,134.20 and 252,275.80 is: 378,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,422.80 : 644,134.20 = 252,275.80 : x
  2. Step 2: Convert to fraction form
    429,422.80/644,134.20 = 252,275.80/x
  3. Step 3: Cross multiply
    429,422.80x = 644,134.20 × 252,275.80
  4. Step 4: Simplify right side
    429,422.80x = 162,499,470,612.36
  5. Step 5: Solve for x
    x = 162,499,470,612.36/429,422.80
  6. Step 6: Final answer
    x = 378,413.70

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