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Finding the Fourth Proportional to 671,879.60, 1,008,049.80 and 298,170.80

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Solution

The fourth proportional to 671,879.60, 1,008,049.80 and 298,170.80 is: 447,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,879.60 : 1,008,049.80 = 298,170.80 : x
  2. Step 2: Convert to fraction form
    671,879.60/1,008,049.80 = 298,170.80/x
  3. Step 3: Cross multiply
    671,879.60x = 1,008,049.80 × 298,170.80
  4. Step 4: Simplify right side
    671,879.60x = 300,571,015,305.84
  5. Step 5: Solve for x
    x = 300,571,015,305.84/671,879.60
  6. Step 6: Final answer
    x = 447,358.45

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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.