Home / 858,129.60-1,286,611.20-325,570.80

Finding the Fourth Proportional to 858,129.60, 1,286,611.20 and 325,570.80

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Solution

The fourth proportional to 858,129.60, 1,286,611.20 and 325,570.80 is: 488,134.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,129.60 : 1,286,611.20 = 325,570.80 : x
  2. Step 2: Convert to fraction form
    858,129.60/1,286,611.20 = 325,570.80/x
  3. Step 3: Cross multiply
    858,129.60x = 1,286,611.20 × 325,570.80
  4. Step 4: Simplify right side
    858,129.60x = 418,883,037,672.96
  5. Step 5: Solve for x
    x = 418,883,037,672.96/858,129.60
  6. Step 6: Final answer
    x = 488,134.94

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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.