Home / 856,138.10-1,284,207.15-436,234.10

Finding the Fourth Proportional to 856,138.10, 1,284,207.15 and 436,234.10

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Solution

The fourth proportional to 856,138.10, 1,284,207.15 and 436,234.10 is: 654,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,138.10 : 1,284,207.15 = 436,234.10 : x
  2. Step 2: Convert to fraction form
    856,138.10/1,284,207.15 = 436,234.10/x
  3. Step 3: Cross multiply
    856,138.10x = 1,284,207.15 × 436,234.10
  4. Step 4: Simplify right side
    856,138.10x = 560,214,950,293.82
  5. Step 5: Solve for x
    x = 560,214,950,293.82/856,138.10
  6. Step 6: Final answer
    x = 654,351.15

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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.