Home / 818,481.60-1,227,139.20-312,847.20

Finding the Fourth Proportional to 818,481.60, 1,227,139.20 and 312,847.20

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Solution

The fourth proportional to 818,481.60, 1,227,139.20 and 312,847.20 is: 469,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,481.60 : 1,227,139.20 = 312,847.20 : x
  2. Step 2: Convert to fraction form
    818,481.60/1,227,139.20 = 312,847.20/x
  3. Step 3: Cross multiply
    818,481.60x = 1,227,139.20 × 312,847.20
  4. Step 4: Simplify right side
    818,481.60x = 383,907,062,730.24
  5. Step 5: Solve for x
    x = 383,907,062,730.24/818,481.60
  6. Step 6: Final answer
    x = 469,047.88

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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.