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Finding the Fourth Proportional to 632,190.30, 948,285.45 and 419,613.90

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Solution

The fourth proportional to 632,190.30, 948,285.45 and 419,613.90 is: 629,420.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,190.30 : 948,285.45 = 419,613.90 : x
  2. Step 2: Convert to fraction form
    632,190.30/948,285.45 = 419,613.90/x
  3. Step 3: Cross multiply
    632,190.30x = 948,285.45 × 419,613.90
  4. Step 4: Simplify right side
    632,190.30x = 397,913,755,987.76
  5. Step 5: Solve for x
    x = 397,913,755,987.76/632,190.30
  6. Step 6: Final answer
    x = 629,420.85

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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.