Home / 2,113,844.20-3,172,515.90-978,353.80

Finding the Fourth Proportional to 2,113,844.20, 3,172,515.90 and 978,353.80

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Solution

The fourth proportional to 2,113,844.20, 3,172,515.90 and 978,353.80 is: 1,468,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113,844.20 : 3,172,515.90 = 978,353.80 : x
  2. Step 2: Convert to fraction form
    2,113,844.20/3,172,515.90 = 978,353.80/x
  3. Step 3: Cross multiply
    2,113,844.20x = 3,172,515.90 × 978,353.80
  4. Step 4: Simplify right side
    2,113,844.20x = 3,103,842,986,325.42
  5. Step 5: Solve for x
    x = 3,103,842,986,325.42/2,113,844.20
  6. Step 6: Final answer
    x = 1,468,340.47

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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.