Home / 812,725.70-1,219,168.74-280,176.62

Finding the Fourth Proportional to 812,725.70, 1,219,168.74 and 280,176.62

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Solution

The fourth proportional to 812,725.70, 1,219,168.74 and 280,176.62 is: 420,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,725.70 : 1,219,168.74 = 280,176.62 : x
  2. Step 2: Convert to fraction form
    812,725.70/1,219,168.74 = 280,176.62/x
  3. Step 3: Cross multiply
    812,725.70x = 1,219,168.74 × 280,176.62
  4. Step 4: Simplify right side
    812,725.70x = 341,582,576,782.86
  5. Step 5: Solve for x
    x = 341,582,576,782.86/812,725.70
  6. Step 6: Final answer
    x = 420,292.57

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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.