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Finding the Fourth Proportional to 403,823.20, 605,734.80 and 396,047.20

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Solution

The fourth proportional to 403,823.20, 605,734.80 and 396,047.20 is: 594,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,823.20 : 605,734.80 = 396,047.20 : x
  2. Step 2: Convert to fraction form
    403,823.20/605,734.80 = 396,047.20/x
  3. Step 3: Cross multiply
    403,823.20x = 605,734.80 × 396,047.20
  4. Step 4: Simplify right side
    403,823.20x = 239,899,571,482.56
  5. Step 5: Solve for x
    x = 239,899,571,482.56/403,823.20
  6. Step 6: Final answer
    x = 594,070.80

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