Home / 812,536.23-1,218,057.98-279,930.63

Finding the Fourth Proportional to 812,536.23, 1,218,057.98 and 279,930.63

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Solution

The fourth proportional to 812,536.23, 1,218,057.98 and 279,930.63 is: 419,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,536.23 : 1,218,057.98 = 279,930.63 : x
  2. Step 2: Convert to fraction form
    812,536.23/1,218,057.98 = 279,930.63/x
  3. Step 3: Cross multiply
    812,536.23x = 1,218,057.98 × 279,930.63
  4. Step 4: Simplify right side
    812,536.23x = 340,971,736,318.27
  5. Step 5: Solve for x
    x = 340,971,736,318.27/812,536.23
  6. Step 6: Final answer
    x = 419,638.81

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