Home / 990,388.62-1,373,728.60-964,138.34

Finding the Fourth Proportional to 990,388.62, 1,373,728.60 and 964,138.34

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Solution

The fourth proportional to 990,388.62, 1,373,728.60 and 964,138.34 is: 1,337,317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,388.62 : 1,373,728.60 = 964,138.34 : x
  2. Step 2: Convert to fraction form
    990,388.62/1,373,728.60 = 964,138.34/x
  3. Step 3: Cross multiply
    990,388.62x = 1,373,728.60 × 964,138.34
  4. Step 4: Simplify right side
    990,388.62x = 1,324,464,412,014.52
  5. Step 5: Solve for x
    x = 1,324,464,412,014.52/990,388.62
  6. Step 6: Final answer
    x = 1,337,317.88

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.