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Finding the Fourth Proportional to 4,978,891.81, 6,872,393.87 and 2,914,390.27

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Solution

The fourth proportional to 4,978,891.81, 6,872,393.87 and 2,914,390.27 is: 4,022,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,891.81 : 6,872,393.87 = 2,914,390.27 : x
  2. Step 2: Convert to fraction form
    4,978,891.81/6,872,393.87 = 2,914,390.27/x
  3. Step 3: Cross multiply
    4,978,891.81x = 6,872,393.87 × 2,914,390.27
  4. Step 4: Simplify right side
    4,978,891.81x = 20,028,837,826,335.64
  5. Step 5: Solve for x
    x = 20,028,837,826,335.64/4,978,891.81
  6. Step 6: Final answer
    x = 4,022,750.16

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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.