Home / 691,425.36-1,037,138.04-218,158.56

Finding the Fourth Proportional to 691,425.36, 1,037,138.04 and 218,158.56

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Solution

The fourth proportional to 691,425.36, 1,037,138.04 and 218,158.56 is: 327,237.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,425.36 : 1,037,138.04 = 218,158.56 : x
  2. Step 2: Convert to fraction form
    691,425.36/1,037,138.04 = 218,158.56/x
  3. Step 3: Cross multiply
    691,425.36x = 1,037,138.04 × 218,158.56
  4. Step 4: Simplify right side
    691,425.36x = 226,260,541,327.62
  5. Step 5: Solve for x
    x = 226,260,541,327.62/691,425.36
  6. Step 6: Final answer
    x = 327,237.84

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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.