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Finding the Fourth Proportional to 603,514.80, 905,272.20 and 271,738.80

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Solution

The fourth proportional to 603,514.80, 905,272.20 and 271,738.80 is: 407,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,514.80 : 905,272.20 = 271,738.80 : x
  2. Step 2: Convert to fraction form
    603,514.80/905,272.20 = 271,738.80/x
  3. Step 3: Cross multiply
    603,514.80x = 905,272.20 × 271,738.80
  4. Step 4: Simplify right side
    603,514.80x = 245,997,581,301.36
  5. Step 5: Solve for x
    x = 245,997,581,301.36/603,514.80
  6. Step 6: Final answer
    x = 407,608.20

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Half scale
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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.