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Finding the Fourth Proportional to 8,611,471.80, 12,922,293.72 and 3,146,080.84

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Solution

The fourth proportional to 8,611,471.80, 12,922,293.72 and 3,146,080.84 is: 4,720,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611,471.80 : 12,922,293.72 = 3,146,080.84 : x
  2. Step 2: Convert to fraction form
    8,611,471.80/12,922,293.72 = 3,146,080.84/x
  3. Step 3: Cross multiply
    8,611,471.80x = 12,922,293.72 × 3,146,080.84
  4. Step 4: Simplify right side
    8,611,471.80x = 40,654,580,681,344.33
  5. Step 5: Solve for x
    x = 40,654,580,681,344.33/8,611,471.80
  6. Step 6: Final answer
    x = 4,720,979.37

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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.