Home / 12,918,778.20-19,381,168.98-4,399,188.48

Finding the Fourth Proportional to 12,918,778.20, 19,381,168.98 and 4,399,188.48

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Solution

The fourth proportional to 12,918,778.20, 19,381,168.98 and 4,399,188.48 is: 6,599,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918,778.20 : 19,381,168.98 = 4,399,188.48 : x
  2. Step 2: Convert to fraction form
    12,918,778.20/19,381,168.98 = 4,399,188.48/x
  3. Step 3: Cross multiply
    12,918,778.20x = 19,381,168.98 × 4,399,188.48
  4. Step 4: Simplify right side
    12,918,778.20x = 85,261,415,305,749.36
  5. Step 5: Solve for x
    x = 85,261,415,305,749.36/12,918,778.20
  6. Step 6: Final answer
    x = 6,599,804.87

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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.