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Finding the Fourth Proportional to 551,223.12, 760,557.96 and 312,759.12

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Solution

The fourth proportional to 551,223.12, 760,557.96 and 312,759.12 is: 431,533.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,223.12 : 760,557.96 = 312,759.12 : x
  2. Step 2: Convert to fraction form
    551,223.12/760,557.96 = 312,759.12/x
  3. Step 3: Cross multiply
    551,223.12x = 760,557.96 × 312,759.12
  4. Step 4: Simplify right side
    551,223.12x = 237,871,438,278.60
  5. Step 5: Solve for x
    x = 237,871,438,278.60/551,223.12
  6. Step 6: Final answer
    x = 431,533.86

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