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Finding the Fourth Proportional to 718,115.56, 990,954.34 and 395,807.88

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Solution

The fourth proportional to 718,115.56, 990,954.34 and 395,807.88 is: 546,190.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,115.56 : 990,954.34 = 395,807.88 : x
  2. Step 2: Convert to fraction form
    718,115.56/990,954.34 = 395,807.88/x
  3. Step 3: Cross multiply
    718,115.56x = 990,954.34 × 395,807.88
  4. Step 4: Simplify right side
    718,115.56x = 392,227,536,492.20
  5. Step 5: Solve for x
    x = 392,227,536,492.20/718,115.56
  6. Step 6: Final answer
    x = 546,190.00

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