Home / 859,136.10-1,288,704.15-298,170.60

Finding the Fourth Proportional to 859,136.10, 1,288,704.15 and 298,170.60

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Solution

The fourth proportional to 859,136.10, 1,288,704.15 and 298,170.60 is: 447,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,136.10 : 1,288,704.15 = 298,170.60 : x
  2. Step 2: Convert to fraction form
    859,136.10/1,288,704.15 = 298,170.60/x
  3. Step 3: Cross multiply
    859,136.10x = 1,288,704.15 × 298,170.60
  4. Step 4: Simplify right side
    859,136.10x = 384,253,689,627.99
  5. Step 5: Solve for x
    x = 384,253,689,627.99/859,136.10
  6. Step 6: Final answer
    x = 447,255.90

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Double scale
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Similar ratio
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1.5x scale

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.