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Finding the Fourth Proportional to 643,191.18, 887,486.47 and 371,159.83

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Solution

The fourth proportional to 643,191.18, 887,486.47 and 371,159.83 is: 512,132.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,191.18 : 887,486.47 = 371,159.83 : x
  2. Step 2: Convert to fraction form
    643,191.18/887,486.47 = 371,159.83/x
  3. Step 3: Cross multiply
    643,191.18x = 887,486.47 × 371,159.83
  4. Step 4: Simplify right side
    643,191.18x = 329,399,327,332.50
  5. Step 5: Solve for x
    x = 329,399,327,332.50/643,191.18
  6. Step 6: Final answer
    x = 512,132.84

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