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Finding the Fourth Proportional to 4,978,170.74, 6,869,797.17 and 2,802,708.98

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Solution

The fourth proportional to 4,978,170.74, 6,869,797.17 and 2,802,708.98 is: 3,867,694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,170.74 : 6,869,797.17 = 2,802,708.98 : x
  2. Step 2: Convert to fraction form
    4,978,170.74/6,869,797.17 = 2,802,708.98/x
  3. Step 3: Cross multiply
    4,978,170.74x = 6,869,797.17 × 2,802,708.98
  4. Step 4: Simplify right side
    4,978,170.74x = 19,254,042,219,137.59
  5. Step 5: Solve for x
    x = 19,254,042,219,137.59/4,978,170.74
  6. Step 6: Final answer
    x = 3,867,694.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.