Home / 1,320,279,469.20-1,980,419,203.80-400,036,233.60

Finding the Fourth Proportional to 1,320,279,469.20, 1,980,419,203.80 and 400,036,233.60

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Solution

The fourth proportional to 1,320,279,469.20, 1,980,419,203.80 and 400,036,233.60 is: 600,054,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,279,469.20 : 1,980,419,203.80 = 400,036,233.60 : x
  2. Step 2: Convert to fraction form
    1,320,279,469.20/1,980,419,203.80 = 400,036,233.60/x
  3. Step 3: Cross multiply
    1,320,279,469.20x = 1,980,419,203.80 × 400,036,233.60
  4. Step 4: Simplify right side
    1,320,279,469.20x = 792,239,439,237,262,848
  5. Step 5: Solve for x
    x = 792,239,439,237,262,848/1,320,279,469.20
  6. Step 6: Final answer
    x = 600,054,350.40

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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.