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Finding the Fourth Proportional to 818,832.92, 1,228,249.38 and 319,847

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Solution

The fourth proportional to 818,832.92, 1,228,249.38 and 319,847 is: 479,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,832.92 : 1,228,249.38 = 319,847 : x
  2. Step 2: Convert to fraction form
    818,832.92/1,228,249.38 = 319,847/x
  3. Step 3: Cross multiply
    818,832.92x = 1,228,249.38 × 319,847
  4. Step 4: Simplify right side
    818,832.92x = 392,851,879,444.86
  5. Step 5: Solve for x
    x = 392,851,879,444.86/818,832.92
  6. Step 6: Final answer
    x = 479,770.50

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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.