Home / 678,499.20-1,018,137.60-258,076.80

Finding the Fourth Proportional to 678,499.20, 1,018,137.60 and 258,076.80

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Solution

The fourth proportional to 678,499.20, 1,018,137.60 and 258,076.80 is: 387,263.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,499.20 : 1,018,137.60 = 258,076.80 : x
  2. Step 2: Convert to fraction form
    678,499.20/1,018,137.60 = 258,076.80/x
  3. Step 3: Cross multiply
    678,499.20x = 1,018,137.60 × 258,076.80
  4. Step 4: Simplify right side
    678,499.20x = 262,757,693,767.68
  5. Step 5: Solve for x
    x = 262,757,693,767.68/678,499.20
  6. Step 6: Final answer
    x = 387,263.09

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