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Finding the Fourth Proportional to 643,436.58, 888,048.70 and 357,048.92

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Solution

The fourth proportional to 643,436.58, 888,048.70 and 357,048.92 is: 492,786.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,436.58 : 888,048.70 = 357,048.92 : x
  2. Step 2: Convert to fraction form
    643,436.58/888,048.70 = 357,048.92/x
  3. Step 3: Cross multiply
    643,436.58x = 888,048.70 × 357,048.92
  4. Step 4: Simplify right side
    643,436.58x = 317,076,829,242.40
  5. Step 5: Solve for x
    x = 317,076,829,242.40/643,436.58
  6. Step 6: Final answer
    x = 492,786.45

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