Home / 2,100,485.70-3,150,728.55-978,668.10

Finding the Fourth Proportional to 2,100,485.70, 3,150,728.55 and 978,668.10

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Solution

The fourth proportional to 2,100,485.70, 3,150,728.55 and 978,668.10 is: 1,468,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,485.70 : 3,150,728.55 = 978,668.10 : x
  2. Step 2: Convert to fraction form
    2,100,485.70/3,150,728.55 = 978,668.10/x
  3. Step 3: Cross multiply
    2,100,485.70x = 3,150,728.55 × 978,668.10
  4. Step 4: Simplify right side
    2,100,485.70x = 3,083,517,523,644.26
  5. Step 5: Solve for x
    x = 3,083,517,523,644.26/2,100,485.70
  6. Step 6: Final answer
    x = 1,468,002.15

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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.