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Finding the Fourth Proportional to 5,181,978.92, 7,773,964.68 and 1,986,855.91

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Solution

The fourth proportional to 5,181,978.92, 7,773,964.68 and 1,986,855.91 is: 2,980,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181,978.92 : 7,773,964.68 = 1,986,855.91 : x
  2. Step 2: Convert to fraction form
    5,181,978.92/7,773,964.68 = 1,986,855.91/x
  3. Step 3: Cross multiply
    5,181,978.92x = 7,773,964.68 × 1,986,855.91
  4. Step 4: Simplify right side
    5,181,978.92x = 15,445,747,619,785.16
  5. Step 5: Solve for x
    x = 15,445,747,619,785.16/5,181,978.92
  6. Step 6: Final answer
    x = 2,980,665.85

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Why These Related Problems?

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