Home / 1,040,406.10-1,560,609.15-978,198.10

Finding the Fourth Proportional to 1,040,406.10, 1,560,609.15 and 978,198.10

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Solution

The fourth proportional to 1,040,406.10, 1,560,609.15 and 978,198.10 is: 1,467,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,406.10 : 1,560,609.15 = 978,198.10 : x
  2. Step 2: Convert to fraction form
    1,040,406.10/1,560,609.15 = 978,198.10/x
  3. Step 3: Cross multiply
    1,040,406.10x = 1,560,609.15 × 978,198.10
  4. Step 4: Simplify right side
    1,040,406.10x = 1,526,584,905,372.62
  5. Step 5: Solve for x
    x = 1,526,584,905,372.62/1,040,406.10
  6. Step 6: Final answer
    x = 1,467,297.15

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Double scale
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Similar ratio
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1.5x scale

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.