Home / 789,114.80-1,183,672.20-505,679.60

Finding the Fourth Proportional to 789,114.80, 1,183,672.20 and 505,679.60

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Solution

The fourth proportional to 789,114.80, 1,183,672.20 and 505,679.60 is: 758,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,114.80 : 1,183,672.20 = 505,679.60 : x
  2. Step 2: Convert to fraction form
    789,114.80/1,183,672.20 = 505,679.60/x
  3. Step 3: Cross multiply
    789,114.80x = 1,183,672.20 × 505,679.60
  4. Step 4: Simplify right side
    789,114.80x = 598,558,884,627.12
  5. Step 5: Solve for x
    x = 598,558,884,627.12/789,114.80
  6. Step 6: Final answer
    x = 758,519.40

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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.