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Finding the Fourth Proportional to 628,191.72, 866,900.34 and 356,312.52

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Solution

The fourth proportional to 628,191.72, 866,900.34 and 356,312.52 is: 491,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,191.72 : 866,900.34 = 356,312.52 : x
  2. Step 2: Convert to fraction form
    628,191.72/866,900.34 = 356,312.52/x
  3. Step 3: Cross multiply
    628,191.72x = 866,900.34 × 356,312.52
  4. Step 4: Simplify right side
    628,191.72x = 308,887,444,734.26
  5. Step 5: Solve for x
    x = 308,887,444,734.26/628,191.72
  6. Step 6: Final answer
    x = 491,708.88

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