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Finding the Fourth Proportional to 389,740.05, 584,628.30 and 123,521.40

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Solution

The fourth proportional to 389,740.05, 584,628.30 and 123,521.40 is: 185,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,740.05 : 584,628.30 = 123,521.40 : x
  2. Step 2: Convert to fraction form
    389,740.05/584,628.30 = 123,521.40/x
  3. Step 3: Cross multiply
    389,740.05x = 584,628.30 × 123,521.40
  4. Step 4: Simplify right side
    389,740.05x = 72,214,106,095.62
  5. Step 5: Solve for x
    x = 72,214,106,095.62/389,740.05
  6. Step 6: Final answer
    x = 185,287.88

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