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Finding the Fourth Proportional to 491,532.75, 678,355.81 and 273,783.19

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Solution

The fourth proportional to 491,532.75, 678,355.81 and 273,783.19 is: 377,843.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,532.75 : 678,355.81 = 273,783.19 : x
  2. Step 2: Convert to fraction form
    491,532.75/678,355.81 = 273,783.19/x
  3. Step 3: Cross multiply
    491,532.75x = 678,355.81 × 273,783.19
  4. Step 4: Simplify right side
    491,532.75x = 185,722,414,552.03
  5. Step 5: Solve for x
    x = 185,722,414,552.03/491,532.75
  6. Step 6: Final answer
    x = 377,843.42

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Double scale
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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.