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Finding the Fourth Proportional to 603,640.20, 905,460.30 and 463,672.20

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Solution

The fourth proportional to 603,640.20, 905,460.30 and 463,672.20 is: 695,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,640.20 : 905,460.30 = 463,672.20 : x
  2. Step 2: Convert to fraction form
    603,640.20/905,460.30 = 463,672.20/x
  3. Step 3: Cross multiply
    603,640.20x = 905,460.30 × 463,672.20
  4. Step 4: Simplify right side
    603,640.20x = 419,836,769,313.66
  5. Step 5: Solve for x
    x = 419,836,769,313.66/603,640.20
  6. Step 6: Final answer
    x = 695,508.30

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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.