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Finding the Fourth Proportional to 486,880.80, 730,321.20 and 276,928.80

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Solution

The fourth proportional to 486,880.80, 730,321.20 and 276,928.80 is: 415,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,880.80 : 730,321.20 = 276,928.80 : x
  2. Step 2: Convert to fraction form
    486,880.80/730,321.20 = 276,928.80/x
  3. Step 3: Cross multiply
    486,880.80x = 730,321.20 × 276,928.80
  4. Step 4: Simplify right side
    486,880.80x = 202,246,973,530.56
  5. Step 5: Solve for x
    x = 202,246,973,530.56/486,880.80
  6. Step 6: Final answer
    x = 415,393.20

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