Home / 1,321,040.15-1,978,196.32-870,394.78

Finding the Fourth Proportional to 1,321,040.15, 1,978,196.32 and 870,394.78

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Solution

The fourth proportional to 1,321,040.15, 1,978,196.32 and 870,394.78 is: 1,303,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,040.15 : 1,978,196.32 = 870,394.78 : x
  2. Step 2: Convert to fraction form
    1,321,040.15/1,978,196.32 = 870,394.78/x
  3. Step 3: Cross multiply
    1,321,040.15x = 1,978,196.32 × 870,394.78
  4. Step 4: Simplify right side
    1,321,040.15x = 1,721,811,753,809.47
  5. Step 5: Solve for x
    x = 1,721,811,753,809.47/1,321,040.15
  6. Step 6: Final answer
    x = 1,303,375.80

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