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Finding the Fourth Proportional to 12,978,231.76, 19,467,413.28 and 3,393,631.36

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Solution

The fourth proportional to 12,978,231.76, 19,467,413.28 and 3,393,631.36 is: 5,090,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,231.76 : 19,467,413.28 = 3,393,631.36 : x
  2. Step 2: Convert to fraction form
    12,978,231.76/19,467,413.28 = 3,393,631.36/x
  3. Step 3: Cross multiply
    12,978,231.76x = 19,467,413.28 × 3,393,631.36
  4. Step 4: Simplify right side
    12,978,231.76x = 66,065,224,205,088.46
  5. Step 5: Solve for x
    x = 66,065,224,205,088.46/12,978,231.76
  6. Step 6: Final answer
    x = 5,090,464.20

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Why These Related Problems?

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