Home / 858,808.45-1,287,720.60-259,679.80

Finding the Fourth Proportional to 858,808.45, 1,287,720.60 and 259,679.80

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Solution

The fourth proportional to 858,808.45, 1,287,720.60 and 259,679.80 is: 389,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,808.45 : 1,287,720.60 = 259,679.80 : x
  2. Step 2: Convert to fraction form
    858,808.45/1,287,720.60 = 259,679.80/x
  3. Step 3: Cross multiply
    858,808.45x = 1,287,720.60 × 259,679.80
  4. Step 4: Simplify right side
    858,808.45x = 334,395,027,863.88
  5. Step 5: Solve for x
    x = 334,395,027,863.88/858,808.45
  6. Step 6: Final answer
    x = 389,370.91

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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.