Home / 789,357.20-1,089,046.68-449,584.88

Finding the Fourth Proportional to 789,357.20, 1,089,046.68 and 449,584.88

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Solution

The fourth proportional to 789,357.20, 1,089,046.68 and 449,584.88 is: 620,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,357.20 : 1,089,046.68 = 449,584.88 : x
  2. Step 2: Convert to fraction form
    789,357.20/1,089,046.68 = 449,584.88/x
  3. Step 3: Cross multiply
    789,357.20x = 1,089,046.68 × 449,584.88
  4. Step 4: Simplify right side
    789,357.20x = 489,618,920,942.20
  5. Step 5: Solve for x
    x = 489,618,920,942.20/789,357.20
  6. Step 6: Final answer
    x = 620,275.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.