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Finding the Fourth Proportional to 1,319,450.64, 1,978,903.80 and 644,839.44

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Solution

The fourth proportional to 1,319,450.64, 1,978,903.80 and 644,839.44 is: 967,126.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,450.64 : 1,978,903.80 = 644,839.44 : x
  2. Step 2: Convert to fraction form
    1,319,450.64/1,978,903.80 = 644,839.44/x
  3. Step 3: Cross multiply
    1,319,450.64x = 1,978,903.80 × 644,839.44
  4. Step 4: Simplify right side
    1,319,450.64x = 1,276,075,218,205.87
  5. Step 5: Solve for x
    x = 1,276,075,218,205.87/1,319,450.64
  6. Step 6: Final answer
    x = 967,126.15

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