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Finding the Fourth Proportional to 1,603,932.16, 2,405,728.74 and 845,469.64

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Solution

The fourth proportional to 1,603,932.16, 2,405,728.74 and 845,469.64 is: 1,268,115.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603,932.16 : 2,405,728.74 = 845,469.64 : x
  2. Step 2: Convert to fraction form
    1,603,932.16/2,405,728.74 = 845,469.64/x
  3. Step 3: Cross multiply
    1,603,932.16x = 2,405,728.74 × 845,469.64
  4. Step 4: Simplify right side
    1,603,932.16x = 2,033,970,611,745.45
  5. Step 5: Solve for x
    x = 2,033,970,611,745.45/1,603,932.16
  6. Step 6: Final answer
    x = 1,268,115.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.