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Finding the Fourth Proportional to 644,692.62, 889,623.72 and 372,778.13

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Solution

The fourth proportional to 644,692.62, 889,623.72 and 372,778.13 is: 514,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,692.62 : 889,623.72 = 372,778.13 : x
  2. Step 2: Convert to fraction form
    644,692.62/889,623.72 = 372,778.13/x
  3. Step 3: Cross multiply
    644,692.62x = 889,623.72 × 372,778.13
  4. Step 4: Simplify right side
    644,692.62x = 331,632,262,297.13
  5. Step 5: Solve for x
    x = 331,632,262,297.13/644,692.62
  6. Step 6: Final answer
    x = 514,403.69

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