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Finding the Fourth Proportional to 7,808,656.80, 11,714,734.80 and 3,015,919.20

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Solution

The fourth proportional to 7,808,656.80, 11,714,734.80 and 3,015,919.20 is: 4,524,554.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808,656.80 : 11,714,734.80 = 3,015,919.20 : x
  2. Step 2: Convert to fraction form
    7,808,656.80/11,714,734.80 = 3,015,919.20/x
  3. Step 3: Cross multiply
    7,808,656.80x = 11,714,734.80 × 3,015,919.20
  4. Step 4: Simplify right side
    7,808,656.80x = 35,330,693,606,228.16
  5. Step 5: Solve for x
    x = 35,330,693,606,228.16/7,808,656.80
  6. Step 6: Final answer
    x = 4,524,554.54

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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.