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Finding the Fourth Proportional to 644,448.40, 966,672.60 and 289,632.40

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Solution

The fourth proportional to 644,448.40, 966,672.60 and 289,632.40 is: 434,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,448.40 : 966,672.60 = 289,632.40 : x
  2. Step 2: Convert to fraction form
    644,448.40/966,672.60 = 289,632.40/x
  3. Step 3: Cross multiply
    644,448.40x = 966,672.60 × 289,632.40
  4. Step 4: Simplify right side
    644,448.40x = 279,979,705,152.24
  5. Step 5: Solve for x
    x = 279,979,705,152.24/644,448.40
  6. Step 6: Final answer
    x = 434,448.60

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