Home / 826,811.70-1,240,217.55-406,907.70

Finding the Fourth Proportional to 826,811.70, 1,240,217.55 and 406,907.70

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Solution

The fourth proportional to 826,811.70, 1,240,217.55 and 406,907.70 is: 610,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,811.70 : 1,240,217.55 = 406,907.70 : x
  2. Step 2: Convert to fraction form
    826,811.70/1,240,217.55 = 406,907.70/x
  3. Step 3: Cross multiply
    826,811.70x = 1,240,217.55 × 406,907.70
  4. Step 4: Simplify right side
    826,811.70x = 504,654,070,770.14
  5. Step 5: Solve for x
    x = 504,654,070,770.14/826,811.70
  6. Step 6: Final answer
    x = 610,361.55

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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.