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Finding the Fourth Proportional to 400,548.30, 600,745.95 and 120,065.55

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Solution

The fourth proportional to 400,548.30, 600,745.95 and 120,065.55 is: 180,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,548.30 : 600,745.95 = 120,065.55 : x
  2. Step 2: Convert to fraction form
    400,548.30/600,745.95 = 120,065.55/x
  3. Step 3: Cross multiply
    400,548.30x = 600,745.95 × 120,065.55
  4. Step 4: Simplify right side
    400,548.30x = 72,128,892,897.02
  5. Step 5: Solve for x
    x = 72,128,892,897.02/400,548.30
  6. Step 6: Final answer
    x = 180,075.39

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