Home / 859,843.20-1,289,764.80-327,187.20

Finding the Fourth Proportional to 859,843.20, 1,289,764.80 and 327,187.20

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Solution

The fourth proportional to 859,843.20, 1,289,764.80 and 327,187.20 is: 490,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,843.20 : 1,289,764.80 = 327,187.20 : x
  2. Step 2: Convert to fraction form
    859,843.20/1,289,764.80 = 327,187.20/x
  3. Step 3: Cross multiply
    859,843.20x = 1,289,764.80 × 327,187.20
  4. Step 4: Simplify right side
    859,843.20x = 421,994,533,570.56
  5. Step 5: Solve for x
    x = 421,994,533,570.56/859,843.20
  6. Step 6: Final answer
    x = 490,780.80

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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.