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Finding the Fourth Proportional to 644,880.53, 966,181.57 and 391,643.93

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Solution

The fourth proportional to 644,880.53, 966,181.57 and 391,643.93 is: 586,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,880.53 : 966,181.57 = 391,643.93 : x
  2. Step 2: Convert to fraction form
    644,880.53/966,181.57 = 391,643.93/x
  3. Step 3: Cross multiply
    644,880.53x = 966,181.57 × 391,643.93
  4. Step 4: Simplify right side
    644,880.53x = 378,399,147,168.37
  5. Step 5: Solve for x
    x = 378,399,147,168.37/644,880.53
  6. Step 6: Final answer
    x = 586,774.03

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