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Finding the Fourth Proportional to 644,521.84, 966,849.72 and 307,505.68

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Solution

The fourth proportional to 644,521.84, 966,849.72 and 307,505.68 is: 461,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,521.84 : 966,849.72 = 307,505.68 : x
  2. Step 2: Convert to fraction form
    644,521.84/966,849.72 = 307,505.68/x
  3. Step 3: Cross multiply
    644,521.84x = 966,849.72 × 307,505.68
  4. Step 4: Simplify right side
    644,521.84x = 297,311,780,606.41
  5. Step 5: Solve for x
    x = 297,311,780,606.41/644,521.84
  6. Step 6: Final answer
    x = 461,290.47

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