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Finding the Fourth Proportional to 1,978,346.19, 2,965,969.04 and 781,164.62

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Solution

The fourth proportional to 1,978,346.19, 2,965,969.04 and 781,164.62 is: 1,171,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,346.19 : 2,965,969.04 = 781,164.62 : x
  2. Step 2: Convert to fraction form
    1,978,346.19/2,965,969.04 = 781,164.62/x
  3. Step 3: Cross multiply
    1,978,346.19x = 2,965,969.04 × 781,164.62
  4. Step 4: Simplify right side
    1,978,346.19x = 2,316,910,078,063.36
  5. Step 5: Solve for x
    x = 2,316,910,078,063.36/1,978,346.19
  6. Step 6: Final answer
    x = 1,171,134.80

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