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Finding the Fourth Proportional to 867,134.78, 1,300,378.67 and 298,355.01

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Solution

The fourth proportional to 867,134.78, 1,300,378.67 and 298,355.01 is: 447,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,134.78 : 1,300,378.67 = 298,355.01 : x
  2. Step 2: Convert to fraction form
    867,134.78/1,300,378.67 = 298,355.01/x
  3. Step 3: Cross multiply
    867,134.78x = 1,300,378.67 × 298,355.01
  4. Step 4: Simplify right side
    867,134.78x = 387,974,491,091.64
  5. Step 5: Solve for x
    x = 387,974,491,091.64/867,134.78
  6. Step 6: Final answer
    x = 447,421.21

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