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Finding the Fourth Proportional to 448,879.50, 673,318.44 and 261,759.78

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Solution

The fourth proportional to 448,879.50, 673,318.44 and 261,759.78 is: 392,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,879.50 : 673,318.44 = 261,759.78 : x
  2. Step 2: Convert to fraction form
    448,879.50/673,318.44 = 261,759.78/x
  3. Step 3: Cross multiply
    448,879.50x = 673,318.44 × 261,759.78
  4. Step 4: Simplify right side
    448,879.50x = 176,247,686,724.34
  5. Step 5: Solve for x
    x = 176,247,686,724.34/448,879.50
  6. Step 6: Final answer
    x = 392,639.20

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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.