Home / 826,811.80-1,240,217.70-543,376.60

Finding the Fourth Proportional to 826,811.80, 1,240,217.70 and 543,376.60

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Solution

The fourth proportional to 826,811.80, 1,240,217.70 and 543,376.60 is: 815,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,811.80 : 1,240,217.70 = 543,376.60 : x
  2. Step 2: Convert to fraction form
    826,811.80/1,240,217.70 = 543,376.60/x
  3. Step 3: Cross multiply
    826,811.80x = 1,240,217.70 × 543,376.60
  4. Step 4: Simplify right side
    826,811.80x = 673,905,277,085.82
  5. Step 5: Solve for x
    x = 673,905,277,085.82/826,811.80
  6. Step 6: Final answer
    x = 815,064.90

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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.