Home / 856,823.10-1,285,234.65-436,919.10

Finding the Fourth Proportional to 856,823.10, 1,285,234.65 and 436,919.10

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Solution

The fourth proportional to 856,823.10, 1,285,234.65 and 436,919.10 is: 655,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,823.10 : 1,285,234.65 = 436,919.10 : x
  2. Step 2: Convert to fraction form
    856,823.10/1,285,234.65 = 436,919.10/x
  3. Step 3: Cross multiply
    856,823.10x = 1,285,234.65 × 436,919.10
  4. Step 4: Simplify right side
    856,823.10x = 561,543,566,566.82
  5. Step 5: Solve for x
    x = 561,543,566,566.82/856,823.10
  6. Step 6: Final answer
    x = 655,378.65

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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.