Home / 813,099.88-1,219,843.62-280,625.56

Finding the Fourth Proportional to 813,099.88, 1,219,843.62 and 280,625.56

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Solution

The fourth proportional to 813,099.88, 1,219,843.62 and 280,625.56 is: 421,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,099.88 : 1,219,843.62 = 280,625.56 : x
  2. Step 2: Convert to fraction form
    813,099.88/1,219,843.62 = 280,625.56/x
  3. Step 3: Cross multiply
    813,099.88x = 1,219,843.62 × 280,625.56
  4. Step 4: Simplify right side
    813,099.88x = 342,319,298,974.93
  5. Step 5: Solve for x
    x = 342,319,298,974.93/813,099.88
  6. Step 6: Final answer
    x = 421,005.23

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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.