Home / 3,945,811.28-5,918,979.36-1,386,716.72

Finding the Fourth Proportional to 3,945,811.28, 5,918,979.36 and 1,386,716.72

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Solution

The fourth proportional to 3,945,811.28, 5,918,979.36 and 1,386,716.72 is: 2,080,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945,811.28 : 5,918,979.36 = 1,386,716.72 : x
  2. Step 2: Convert to fraction form
    3,945,811.28/5,918,979.36 = 1,386,716.72/x
  3. Step 3: Cross multiply
    3,945,811.28x = 5,918,979.36 × 1,386,716.72
  4. Step 4: Simplify right side
    3,945,811.28x = 8,207,947,643,846.90
  5. Step 5: Solve for x
    x = 8,207,947,643,846.90/3,945,811.28
  6. Step 6: Final answer
    x = 2,080,167.31

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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.