Home / 856,138.60-1,284,207.90-436,234.60

Finding the Fourth Proportional to 856,138.60, 1,284,207.90 and 436,234.60

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Solution

The fourth proportional to 856,138.60, 1,284,207.90 and 436,234.60 is: 654,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,138.60 : 1,284,207.90 = 436,234.60 : x
  2. Step 2: Convert to fraction form
    856,138.60/1,284,207.90 = 436,234.60/x
  3. Step 3: Cross multiply
    856,138.60x = 1,284,207.90 × 436,234.60
  4. Step 4: Simplify right side
    856,138.60x = 560,215,919,573.34
  5. Step 5: Solve for x
    x = 560,215,919,573.34/856,138.60
  6. Step 6: Final answer
    x = 654,351.90

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Half scale
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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.