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Finding the Fourth Proportional to 1,305,824.80, 1,956,404.40 and 1,067,879.20

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Solution

The fourth proportional to 1,305,824.80, 1,956,404.40 and 1,067,879.20 is: 1,599,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305,824.80 : 1,956,404.40 = 1,067,879.20 : x
  2. Step 2: Convert to fraction form
    1,305,824.80/1,956,404.40 = 1,067,879.20/x
  3. Step 3: Cross multiply
    1,305,824.80x = 1,956,404.40 × 1,067,879.20
  4. Step 4: Simplify right side
    1,305,824.80x = 2,089,203,565,548.48
  5. Step 5: Solve for x
    x = 2,089,203,565,548.48/1,305,824.80
  6. Step 6: Final answer
    x = 1,599,911.08

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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.