Home / 780,577.30-1,171,928.18-439,261.86

Finding the Fourth Proportional to 780,577.30, 1,171,928.18 and 439,261.86

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Solution

The fourth proportional to 780,577.30, 1,171,928.18 and 439,261.86 is: 659,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,577.30 : 1,171,928.18 = 439,261.86 : x
  2. Step 2: Convert to fraction form
    780,577.30/1,171,928.18 = 439,261.86/x
  3. Step 3: Cross multiply
    780,577.30x = 1,171,928.18 × 439,261.86
  4. Step 4: Simplify right side
    780,577.30x = 514,783,352,133.22
  5. Step 5: Solve for x
    x = 514,783,352,133.22/780,577.30
  6. Step 6: Final answer
    x = 659,490.55

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