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Finding the Fourth Proportional to 603,650.80, 905,476.20 and 404,196.40

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Solution

The fourth proportional to 603,650.80, 905,476.20 and 404,196.40 is: 606,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,650.80 : 905,476.20 = 404,196.40 : x
  2. Step 2: Convert to fraction form
    603,650.80/905,476.20 = 404,196.40/x
  3. Step 3: Cross multiply
    603,650.80x = 905,476.20 × 404,196.40
  4. Step 4: Simplify right side
    603,650.80x = 365,990,220,325.68
  5. Step 5: Solve for x
    x = 365,990,220,325.68/603,650.80
  6. Step 6: Final answer
    x = 606,294.60

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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.