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Finding the Fourth Proportional to 553,900.52, 764,386.07 and 308,900.77

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Solution

The fourth proportional to 553,900.52, 764,386.07 and 308,900.77 is: 426,284.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,900.52 : 764,386.07 = 308,900.77 : x
  2. Step 2: Convert to fraction form
    553,900.52/764,386.07 = 308,900.77/x
  3. Step 3: Cross multiply
    553,900.52x = 764,386.07 × 308,900.77
  4. Step 4: Simplify right side
    553,900.52x = 236,119,442,144.81
  5. Step 5: Solve for x
    x = 236,119,442,144.81/553,900.52
  6. Step 6: Final answer
    x = 426,284.92

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