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Finding the Fourth Proportional to 485,471.73, 669,676.64 and 303,868.38

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Solution

The fourth proportional to 485,471.73, 669,676.64 and 303,868.38 is: 419,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,471.73 : 669,676.64 = 303,868.38 : x
  2. Step 2: Convert to fraction form
    485,471.73/669,676.64 = 303,868.38/x
  3. Step 3: Cross multiply
    485,471.73x = 669,676.64 × 303,868.38
  4. Step 4: Simplify right side
    485,471.73x = 203,493,554,201.30
  5. Step 5: Solve for x
    x = 203,493,554,201.30/485,471.73
  6. Step 6: Final answer
    x = 419,166.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.