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Finding the Fourth Proportional to 603,815.30, 905,832.30 and 303,540.20

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Solution

The fourth proportional to 603,815.30, 905,832.30 and 303,540.20 is: 455,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,815.30 : 905,832.30 = 303,540.20 : x
  2. Step 2: Convert to fraction form
    603,815.30/905,832.30 = 303,540.20/x
  3. Step 3: Cross multiply
    603,815.30x = 905,832.30 × 303,540.20
  4. Step 4: Simplify right side
    603,815.30x = 274,956,517,508.46
  5. Step 5: Solve for x
    x = 274,956,517,508.46/603,815.30
  6. Step 6: Final answer
    x = 455,365.27

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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.