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Finding the Fourth Proportional to 512,748.11, 707,606.69 and 283,320.15

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Solution

The fourth proportional to 512,748.11, 707,606.69 and 283,320.15 is: 390,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,748.11 : 707,606.69 = 283,320.15 : x
  2. Step 2: Convert to fraction form
    512,748.11/707,606.69 = 283,320.15/x
  3. Step 3: Cross multiply
    512,748.11x = 707,606.69 × 283,320.15
  4. Step 4: Simplify right side
    512,748.11x = 200,479,232,135.20
  5. Step 5: Solve for x
    x = 200,479,232,135.20/512,748.11
  6. Step 6: Final answer
    x = 390,989.71

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