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Finding the Fourth Proportional to 515,712.99, 711,696.20 and 289,375.23

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Solution

The fourth proportional to 515,712.99, 711,696.20 and 289,375.23 is: 399,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,712.99 : 711,696.20 = 289,375.23 : x
  2. Step 2: Convert to fraction form
    515,712.99/711,696.20 = 289,375.23/x
  3. Step 3: Cross multiply
    515,712.99x = 711,696.20 × 289,375.23
  4. Step 4: Simplify right side
    515,712.99x = 205,947,250,118.25
  5. Step 5: Solve for x
    x = 205,947,250,118.25/515,712.99
  6. Step 6: Final answer
    x = 399,344.70

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