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Finding the Fourth Proportional to 603,552.60, 905,328.90 and 318,853.80

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Solution

The fourth proportional to 603,552.60, 905,328.90 and 318,853.80 is: 478,280.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,552.60 : 905,328.90 = 318,853.80 : x
  2. Step 2: Convert to fraction form
    603,552.60/905,328.90 = 318,853.80/x
  3. Step 3: Cross multiply
    603,552.60x = 905,328.90 × 318,853.80
  4. Step 4: Simplify right side
    603,552.60x = 288,667,560,014.82
  5. Step 5: Solve for x
    x = 288,667,560,014.82/603,552.60
  6. Step 6: Final answer
    x = 478,280.70

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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.