Home / 494,270.15-681,818.31-287,515.25

Finding the Fourth Proportional to 494,270.15, 681,818.31 and 287,515.25

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Solution

The fourth proportional to 494,270.15, 681,818.31 and 287,515.25 is: 396,611.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,270.15 : 681,818.31 = 287,515.25 : x
  2. Step 2: Convert to fraction form
    494,270.15/681,818.31 = 287,515.25/x
  3. Step 3: Cross multiply
    494,270.15x = 681,818.31 × 287,515.25
  4. Step 4: Simplify right side
    494,270.15x = 196,033,158,445.14
  5. Step 5: Solve for x
    x = 196,033,158,445.14/494,270.15
  6. Step 6: Final answer
    x = 396,611.37

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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.