Home / 689,150.07-1,033,724.49-215,872.35

Finding the Fourth Proportional to 689,150.07, 1,033,724.49 and 215,872.35

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Solution

The fourth proportional to 689,150.07, 1,033,724.49 and 215,872.35 is: 323,808.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,150.07 : 1,033,724.49 = 215,872.35 : x
  2. Step 2: Convert to fraction form
    689,150.07/1,033,724.49 = 215,872.35/x
  3. Step 3: Cross multiply
    689,150.07x = 1,033,724.49 × 215,872.35
  4. Step 4: Simplify right side
    689,150.07x = 223,152,534,908.85
  5. Step 5: Solve for x
    x = 223,152,534,908.85/689,150.07
  6. Step 6: Final answer
    x = 323,808.33

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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.