Home / 1,279,231.72-1,918,847.31-380,686.30

Finding the Fourth Proportional to 1,279,231.72, 1,918,847.31 and 380,686.30

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Solution

The fourth proportional to 1,279,231.72, 1,918,847.31 and 380,686.30 is: 571,029.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,231.72 : 1,918,847.31 = 380,686.30 : x
  2. Step 2: Convert to fraction form
    1,279,231.72/1,918,847.31 = 380,686.30/x
  3. Step 3: Cross multiply
    1,279,231.72x = 1,918,847.31 × 380,686.30
  4. Step 4: Simplify right side
    1,279,231.72x = 730,478,882,708.85
  5. Step 5: Solve for x
    x = 730,478,882,708.85/1,279,231.72
  6. Step 6: Final answer
    x = 571,029.37

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