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Finding the Fourth Proportional to 538,140.20, 805,655.10 and 328,188.20

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Solution

The fourth proportional to 538,140.20, 805,655.10 and 328,188.20 is: 491,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,140.20 : 805,655.10 = 328,188.20 : x
  2. Step 2: Convert to fraction form
    538,140.20/805,655.10 = 328,188.20/x
  3. Step 3: Cross multiply
    538,140.20x = 805,655.10 × 328,188.20
  4. Step 4: Simplify right side
    538,140.20x = 264,406,497,089.82
  5. Step 5: Solve for x
    x = 264,406,497,089.82/538,140.20
  6. Step 6: Final answer
    x = 491,333.85

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