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Finding the Fourth Proportional to 603,612.30, 905,418.45 and 303,977.10

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Solution

The fourth proportional to 603,612.30, 905,418.45 and 303,977.10 is: 455,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,612.30 : 905,418.45 = 303,977.10 : x
  2. Step 2: Convert to fraction form
    603,612.30/905,418.45 = 303,977.10/x
  3. Step 3: Cross multiply
    603,612.30x = 905,418.45 × 303,977.10
  4. Step 4: Simplify right side
    603,612.30x = 275,226,474,717.50
  5. Step 5: Solve for x
    x = 275,226,474,717.50/603,612.30
  6. Step 6: Final answer
    x = 455,965.65

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Half scale
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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.