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Finding the Fourth Proportional to 718,226.99, 991,146.74 and 395,937.09

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Solution

The fourth proportional to 718,226.99, 991,146.74 and 395,937.09 is: 546,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,226.99 : 991,146.74 = 395,937.09 : x
  2. Step 2: Convert to fraction form
    718,226.99/991,146.74 = 395,937.09/x
  3. Step 3: Cross multiply
    718,226.99x = 991,146.74 × 395,937.09
  4. Step 4: Simplify right side
    718,226.99x = 392,431,755,998.59
  5. Step 5: Solve for x
    x = 392,431,755,998.59/718,226.99
  6. Step 6: Final answer
    x = 546,389.60

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