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Finding the Fourth Proportional to 603,553.40, 905,330.10 and 323,617.40

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Solution

The fourth proportional to 603,553.40, 905,330.10 and 323,617.40 is: 485,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,553.40 : 905,330.10 = 323,617.40 : x
  2. Step 2: Convert to fraction form
    603,553.40/905,330.10 = 323,617.40/x
  3. Step 3: Cross multiply
    603,553.40x = 905,330.10 × 323,617.40
  4. Step 4: Simplify right side
    603,553.40x = 292,980,573,103.74
  5. Step 5: Solve for x
    x = 292,980,573,103.74/603,553.40
  6. Step 6: Final answer
    x = 485,426.10

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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.