Home / 1,978,415.40-2,968,400.70-780,133.80

Finding the Fourth Proportional to 1,978,415.40, 2,968,400.70 and 780,133.80

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Solution

The fourth proportional to 1,978,415.40, 2,968,400.70 and 780,133.80 is: 1,170,507.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,415.40 : 2,968,400.70 = 780,133.80 : x
  2. Step 2: Convert to fraction form
    1,978,415.40/2,968,400.70 = 780,133.80/x
  3. Step 3: Cross multiply
    1,978,415.40x = 2,968,400.70 × 780,133.80
  4. Step 4: Simplify right side
    1,978,415.40x = 2,315,749,718,013.66
  5. Step 5: Solve for x
    x = 2,315,749,718,013.66/1,978,415.40
  6. Step 6: Final answer
    x = 1,170,507.33

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