Home / 479,397,284.72-661,380,010-278,419,945.36

Finding the Fourth Proportional to 479,397,284.72, 661,380,010 and 278,419,945.36

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Solution

The fourth proportional to 479,397,284.72, 661,380,010 and 278,419,945.36 is: 384,110,198.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,397,284.72 : 661,380,010 = 278,419,945.36 : x
  2. Step 2: Convert to fraction form
    479,397,284.72/661,380,010 = 278,419,945.36/x
  3. Step 3: Cross multiply
    479,397,284.72x = 661,380,010 × 278,419,945.36
  4. Step 4: Simplify right side
    479,397,284.72x = 184,141,386,246,396,256
  5. Step 5: Solve for x
    x = 184,141,386,246,396,256/479,397,284.72
  6. Step 6: Final answer
    x = 384,110,198.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.