Home / 689,135.99-1,033,704.05-215,858.25

Finding the Fourth Proportional to 689,135.99, 1,033,704.05 and 215,858.25

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Solution

The fourth proportional to 689,135.99, 1,033,704.05 and 215,858.25 is: 323,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,135.99 : 1,033,704.05 = 215,858.25 : x
  2. Step 2: Convert to fraction form
    689,135.99/1,033,704.05 = 215,858.25/x
  3. Step 3: Cross multiply
    689,135.99x = 1,033,704.05 × 215,858.25
  4. Step 4: Simplify right side
    689,135.99x = 223,133,546,171.62
  5. Step 5: Solve for x
    x = 223,133,546,171.62/689,135.99
  6. Step 6: Final answer
    x = 323,787.40

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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.