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Finding the Fourth Proportional to 7,698,919.80, 11,548,379.70 and 2,019,718.20

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Solution

The fourth proportional to 7,698,919.80, 11,548,379.70 and 2,019,718.20 is: 3,029,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,698,919.80 : 11,548,379.70 = 2,019,718.20 : x
  2. Step 2: Convert to fraction form
    7,698,919.80/11,548,379.70 = 2,019,718.20/x
  3. Step 3: Cross multiply
    7,698,919.80x = 11,548,379.70 × 2,019,718.20
  4. Step 4: Simplify right side
    7,698,919.80x = 23,324,472,660,600.54
  5. Step 5: Solve for x
    x = 23,324,472,660,600.54/7,698,919.80
  6. Step 6: Final answer
    x = 3,029,577.30

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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.