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Finding the Fourth Proportional to 559,640.37, 772,281.18 and 304,986.09

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Solution

The fourth proportional to 559,640.37, 772,281.18 and 304,986.09 is: 420,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,640.37 : 772,281.18 = 304,986.09 : x
  2. Step 2: Convert to fraction form
    559,640.37/772,281.18 = 304,986.09/x
  3. Step 3: Cross multiply
    559,640.37x = 772,281.18 × 304,986.09
  4. Step 4: Simplify right side
    559,640.37x = 235,535,017,468.79
  5. Step 5: Solve for x
    x = 235,535,017,468.79/559,640.37
  6. Step 6: Final answer
    x = 420,868.53

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