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Finding the Fourth Proportional to 886,863.96, 1,330,492.90 and 255,728.60

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Solution

The fourth proportional to 886,863.96, 1,330,492.90 and 255,728.60 is: 383,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,863.96 : 1,330,492.90 = 255,728.60 : x
  2. Step 2: Convert to fraction form
    886,863.96/1,330,492.90 = 255,728.60/x
  3. Step 3: Cross multiply
    886,863.96x = 1,330,492.90 × 255,728.60
  4. Step 4: Simplify right side
    886,863.96x = 340,245,086,626.94
  5. Step 5: Solve for x
    x = 340,245,086,626.94/886,863.96
  6. Step 6: Final answer
    x = 383,649.69

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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.