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Finding the Fourth Proportional to 496,987.60, 745,481.40 and 418,255.60

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Solution

The fourth proportional to 496,987.60, 745,481.40 and 418,255.60 is: 627,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,987.60 : 745,481.40 = 418,255.60 : x
  2. Step 2: Convert to fraction form
    496,987.60/745,481.40 = 418,255.60/x
  3. Step 3: Cross multiply
    496,987.60x = 745,481.40 × 418,255.60
  4. Step 4: Simplify right side
    496,987.60x = 311,801,770,245.84
  5. Step 5: Solve for x
    x = 311,801,770,245.84/496,987.60
  6. Step 6: Final answer
    x = 627,383.40

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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.