Home / 1,039,899.70-1,556,739.15-978,382.90

Finding the Fourth Proportional to 1,039,899.70, 1,556,739.15 and 978,382.90

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Solution

The fourth proportional to 1,039,899.70, 1,556,739.15 and 978,382.90 is: 1,464,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,899.70 : 1,556,739.15 = 978,382.90 : x
  2. Step 2: Convert to fraction form
    1,039,899.70/1,556,739.15 = 978,382.90/x
  3. Step 3: Cross multiply
    1,039,899.70x = 1,556,739.15 × 978,382.90
  4. Step 4: Simplify right side
    1,039,899.70x = 1,523,086,964,120.54
  5. Step 5: Solve for x
    x = 1,523,086,964,120.54/1,039,899.70
  6. Step 6: Final answer
    x = 1,464,647.95

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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.