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Finding the Fourth Proportional to 632,155.80, 948,233.70 and 419,579.40

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Solution

The fourth proportional to 632,155.80, 948,233.70 and 419,579.40 is: 629,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,155.80 : 948,233.70 = 419,579.40 : x
  2. Step 2: Convert to fraction form
    632,155.80/948,233.70 = 419,579.40/x
  3. Step 3: Cross multiply
    632,155.80x = 948,233.70 × 419,579.40
  4. Step 4: Simplify right side
    632,155.80x = 397,859,326,905.78
  5. Step 5: Solve for x
    x = 397,859,326,905.78/632,155.80
  6. Step 6: Final answer
    x = 629,369.10

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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.