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Finding the Fourth Proportional to 418,082.72, 576,636.27 and 289,235.61

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Solution

The fourth proportional to 418,082.72, 576,636.27 and 289,235.61 is: 398,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,082.72 : 576,636.27 = 289,235.61 : x
  2. Step 2: Convert to fraction form
    418,082.72/576,636.27 = 289,235.61/x
  3. Step 3: Cross multiply
    418,082.72x = 576,636.27 × 289,235.61
  4. Step 4: Simplify right side
    418,082.72x = 166,783,742,216.94
  5. Step 5: Solve for x
    x = 166,783,742,216.94/418,082.72
  6. Step 6: Final answer
    x = 398,925.23

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