Home / 839,873,221.60-1,259,809,832.40-666,410,879.20

Finding the Fourth Proportional to 839,873,221.60, 1,259,809,832.40 and 666,410,879.20

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Solution

The fourth proportional to 839,873,221.60, 1,259,809,832.40 and 666,410,879.20 is: 999,616,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,873,221.60 : 1,259,809,832.40 = 666,410,879.20 : x
  2. Step 2: Convert to fraction form
    839,873,221.60/1,259,809,832.40 = 666,410,879.20/x
  3. Step 3: Cross multiply
    839,873,221.60x = 1,259,809,832.40 × 666,410,879.20
  4. Step 4: Simplify right side
    839,873,221.60x = 839,550,978,034,488,832
  5. Step 5: Solve for x
    x = 839,550,978,034,488,832/839,873,221.60
  6. Step 6: Final answer
    x = 999,616,318.80

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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.