Home / 678,202.38-936,048.42-448,764.21

Finding the Fourth Proportional to 678,202.38, 936,048.42 and 448,764.21

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Solution

The fourth proportional to 678,202.38, 936,048.42 and 448,764.21 is: 619,380.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,202.38 : 936,048.42 = 448,764.21 : x
  2. Step 2: Convert to fraction form
    678,202.38/936,048.42 = 448,764.21/x
  3. Step 3: Cross multiply
    678,202.38x = 936,048.42 × 448,764.21
  4. Step 4: Simplify right side
    678,202.38x = 420,065,029,723.05
  5. Step 5: Solve for x
    x = 420,065,029,723.05/678,202.38
  6. Step 6: Final answer
    x = 619,380.06

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.