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Finding the Fourth Proportional to 403,320.40, 604,980.60 and 263,237.20

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Solution

The fourth proportional to 403,320.40, 604,980.60 and 263,237.20 is: 394,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,320.40 : 604,980.60 = 263,237.20 : x
  2. Step 2: Convert to fraction form
    403,320.40/604,980.60 = 263,237.20/x
  3. Step 3: Cross multiply
    403,320.40x = 604,980.60 × 263,237.20
  4. Step 4: Simplify right side
    403,320.40x = 159,253,399,198.32
  5. Step 5: Solve for x
    x = 159,253,399,198.32/403,320.40
  6. Step 6: Final answer
    x = 394,855.80

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