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Finding the Fourth Proportional to 531,421.43, 733,344.50 and 289,700.15

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Solution

The fourth proportional to 531,421.43, 733,344.50 and 289,700.15 is: 399,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,421.43 : 733,344.50 = 289,700.15 : x
  2. Step 2: Convert to fraction form
    531,421.43/733,344.50 = 289,700.15/x
  3. Step 3: Cross multiply
    531,421.43x = 733,344.50 × 289,700.15
  4. Step 4: Simplify right side
    531,421.43x = 212,450,008,709.20
  5. Step 5: Solve for x
    x = 212,450,008,709.20/531,421.43
  6. Step 6: Final answer
    x = 399,776.90

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