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Finding the Fourth Proportional to 3,315,745.75, 4,973,618.34 and 919,590.34

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Solution

The fourth proportional to 3,315,745.75, 4,973,618.34 and 919,590.34 is: 1,379,385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,745.75 : 4,973,618.34 = 919,590.34 : x
  2. Step 2: Convert to fraction form
    3,315,745.75/4,973,618.34 = 919,590.34/x
  3. Step 3: Cross multiply
    3,315,745.75x = 4,973,618.34 × 919,590.34
  4. Step 4: Simplify right side
    3,315,745.75x = 4,573,691,380,310.84
  5. Step 5: Solve for x
    x = 4,573,691,380,310.84/3,315,745.75
  6. Step 6: Final answer
    x = 1,379,385.43

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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.