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Finding the Fourth Proportional to 603,604.80, 905,407.20 and 404,150.40

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Solution

The fourth proportional to 603,604.80, 905,407.20 and 404,150.40 is: 606,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,604.80 : 905,407.20 = 404,150.40 : x
  2. Step 2: Convert to fraction form
    603,604.80/905,407.20 = 404,150.40/x
  3. Step 3: Cross multiply
    603,604.80x = 905,407.20 × 404,150.40
  4. Step 4: Simplify right side
    603,604.80x = 365,920,682,042.88
  5. Step 5: Solve for x
    x = 365,920,682,042.88/603,604.80
  6. Step 6: Final answer
    x = 606,225.60

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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.