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Finding the Fourth Proportional to 643,865.81, 888,374.72 and 357,314.13

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Solution

The fourth proportional to 643,865.81, 888,374.72 and 357,314.13 is: 493,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,865.81 : 888,374.72 = 357,314.13 : x
  2. Step 2: Convert to fraction form
    643,865.81/888,374.72 = 357,314.13/x
  3. Step 3: Cross multiply
    643,865.81x = 888,374.72 × 357,314.13
  4. Step 4: Simplify right side
    643,865.81x = 317,428,841,084.08
  5. Step 5: Solve for x
    x = 317,428,841,084.08/643,865.81
  6. Step 6: Final answer
    x = 493,004.66

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