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Finding the Fourth Proportional to 603,742.80, 905,614.20 and 271,966.80

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Solution

The fourth proportional to 603,742.80, 905,614.20 and 271,966.80 is: 407,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,742.80 : 905,614.20 = 271,966.80 : x
  2. Step 2: Convert to fraction form
    603,742.80/905,614.20 = 271,966.80/x
  3. Step 3: Cross multiply
    603,742.80x = 905,614.20 × 271,966.80
  4. Step 4: Simplify right side
    603,742.80x = 246,296,996,008.56
  5. Step 5: Solve for x
    x = 246,296,996,008.56/603,742.80
  6. Step 6: Final answer
    x = 407,950.20

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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.