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Finding the Fourth Proportional to 481,764.80, 721,869.60 and 303,953.60

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Solution

The fourth proportional to 481,764.80, 721,869.60 and 303,953.60 is: 455,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,764.80 : 721,869.60 = 303,953.60 : x
  2. Step 2: Convert to fraction form
    481,764.80/721,869.60 = 303,953.60/x
  3. Step 3: Cross multiply
    481,764.80x = 721,869.60 × 303,953.60
  4. Step 4: Simplify right side
    481,764.80x = 219,414,863,650.56
  5. Step 5: Solve for x
    x = 219,414,863,650.56/481,764.80
  6. Step 6: Final answer
    x = 455,439.80

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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.