Home / 842,113.20-1,263,180.60-281,147.70

Finding the Fourth Proportional to 842,113.20, 1,263,180.60 and 281,147.70

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Solution

The fourth proportional to 842,113.20, 1,263,180.60 and 281,147.70 is: 421,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,113.20 : 1,263,180.60 = 281,147.70 : x
  2. Step 2: Convert to fraction form
    842,113.20/1,263,180.60 = 281,147.70/x
  3. Step 3: Cross multiply
    842,113.20x = 1,263,180.60 × 281,147.70
  4. Step 4: Simplify right side
    842,113.20x = 355,140,320,374.62
  5. Step 5: Solve for x
    x = 355,140,320,374.62/842,113.20
  6. Step 6: Final answer
    x = 421,725.16

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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.