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Finding the Fourth Proportional to 603,535.80, 905,303.70 and 303,900.60

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Solution

The fourth proportional to 603,535.80, 905,303.70 and 303,900.60 is: 455,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,535.80 : 905,303.70 = 303,900.60 : x
  2. Step 2: Convert to fraction form
    603,535.80/905,303.70 = 303,900.60/x
  3. Step 3: Cross multiply
    603,535.80x = 905,303.70 × 303,900.60
  4. Step 4: Simplify right side
    603,535.80x = 275,122,337,612.22
  5. Step 5: Solve for x
    x = 275,122,337,612.22/603,535.80
  6. Step 6: Final answer
    x = 455,850.90

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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.