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Finding the Fourth Proportional to 431,519.40, 647,279.10 and 363,090.60

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Solution

The fourth proportional to 431,519.40, 647,279.10 and 363,090.60 is: 544,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,519.40 : 647,279.10 = 363,090.60 : x
  2. Step 2: Convert to fraction form
    431,519.40/647,279.10 = 363,090.60/x
  3. Step 3: Cross multiply
    431,519.40x = 647,279.10 × 363,090.60
  4. Step 4: Simplify right side
    431,519.40x = 235,020,956,786.46
  5. Step 5: Solve for x
    x = 235,020,956,786.46/431,519.40
  6. Step 6: Final answer
    x = 544,635.90

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