Home / 812,743.03-1,219,172.97-280,256.37

Finding the Fourth Proportional to 812,743.03, 1,219,172.97 and 280,256.37

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Solution

The fourth proportional to 812,743.03, 1,219,172.97 and 280,256.37 is: 420,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,743.03 : 1,219,172.97 = 280,256.37 : x
  2. Step 2: Convert to fraction form
    812,743.03/1,219,172.97 = 280,256.37/x
  3. Step 3: Cross multiply
    812,743.03x = 1,219,172.97 × 280,256.37
  4. Step 4: Simplify right side
    812,743.03x = 341,680,990,974.32
  5. Step 5: Solve for x
    x = 341,680,990,974.32/812,743.03
  6. Step 6: Final answer
    x = 420,404.70

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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.