Home / 1,221,930.24-1,686,219.57-678,089.76

Finding the Fourth Proportional to 1,221,930.24, 1,686,219.57 and 678,089.76

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Solution

The fourth proportional to 1,221,930.24, 1,686,219.57 and 678,089.76 is: 935,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,930.24 : 1,686,219.57 = 678,089.76 : x
  2. Step 2: Convert to fraction form
    1,221,930.24/1,686,219.57 = 678,089.76/x
  3. Step 3: Cross multiply
    1,221,930.24x = 1,686,219.57 × 678,089.76
  4. Step 4: Simplify right side
    1,221,930.24x = 1,143,408,223,528.60
  5. Step 5: Solve for x
    x = 1,143,408,223,528.60/1,221,930.24
  6. Step 6: Final answer
    x = 935,739.36

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