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Finding the Fourth Proportional to 456,852.80, 685,279.20 and 124,428.80

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Solution

The fourth proportional to 456,852.80, 685,279.20 and 124,428.80 is: 186,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,852.80 : 685,279.20 = 124,428.80 : x
  2. Step 2: Convert to fraction form
    456,852.80/685,279.20 = 124,428.80/x
  3. Step 3: Cross multiply
    456,852.80x = 685,279.20 × 124,428.80
  4. Step 4: Simplify right side
    456,852.80x = 85,268,468,520.96
  5. Step 5: Solve for x
    x = 85,268,468,520.96/456,852.80
  6. Step 6: Final answer
    x = 186,643.20

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