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Finding the Fourth Proportional to 478,451.88, 717,677.82 and 328,236.84

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Solution

The fourth proportional to 478,451.88, 717,677.82 and 328,236.84 is: 492,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,451.88 : 717,677.82 = 328,236.84 : x
  2. Step 2: Convert to fraction form
    478,451.88/717,677.82 = 328,236.84/x
  3. Step 3: Cross multiply
    478,451.88x = 717,677.82 × 328,236.84
  4. Step 4: Simplify right side
    478,451.88x = 235,568,299,774.89
  5. Step 5: Solve for x
    x = 235,568,299,774.89/478,451.88
  6. Step 6: Final answer
    x = 492,355.26

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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.