Home / 809,021.70-1,213,532.55-557,079.30

Finding the Fourth Proportional to 809,021.70, 1,213,532.55 and 557,079.30

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Solution

The fourth proportional to 809,021.70, 1,213,532.55 and 557,079.30 is: 835,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,021.70 : 1,213,532.55 = 557,079.30 : x
  2. Step 2: Convert to fraction form
    809,021.70/1,213,532.55 = 557,079.30/x
  3. Step 3: Cross multiply
    809,021.70x = 1,213,532.55 × 557,079.30
  4. Step 4: Simplify right side
    809,021.70x = 676,033,863,481.22
  5. Step 5: Solve for x
    x = 676,033,863,481.22/809,021.70
  6. Step 6: Final answer
    x = 835,618.95

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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.