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Finding the Fourth Proportional to 643,281.01, 887,834.06 and 356,893.36

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Solution

The fourth proportional to 643,281.01, 887,834.06 and 356,893.36 is: 492,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,281.01 : 887,834.06 = 356,893.36 : x
  2. Step 2: Convert to fraction form
    643,281.01/887,834.06 = 356,893.36/x
  3. Step 3: Cross multiply
    643,281.01x = 887,834.06 × 356,893.36
  4. Step 4: Simplify right side
    643,281.01x = 316,862,080,795.84
  5. Step 5: Solve for x
    x = 316,862,080,795.84/643,281.01
  6. Step 6: Final answer
    x = 492,571.79

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