Home / 603,760.20-905,640.30-288,832.20

Finding the Fourth Proportional to 603,760.20, 905,640.30 and 288,832.20

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Solution

The fourth proportional to 603,760.20, 905,640.30 and 288,832.20 is: 433,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,760.20 : 905,640.30 = 288,832.20 : x
  2. Step 2: Convert to fraction form
    603,760.20/905,640.30 = 288,832.20/x
  3. Step 3: Cross multiply
    603,760.20x = 905,640.30 × 288,832.20
  4. Step 4: Simplify right side
    603,760.20x = 261,578,080,257.66
  5. Step 5: Solve for x
    x = 261,578,080,257.66/603,760.20
  6. Step 6: Final answer
    x = 433,248.30

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Double scale
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Similar ratio
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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.