Home / 815,185.62-1,222,436.34-309,467.79

Finding the Fourth Proportional to 815,185.62, 1,222,436.34 and 309,467.79

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Solution

The fourth proportional to 815,185.62, 1,222,436.34 and 309,467.79 is: 464,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,185.62 : 1,222,436.34 = 309,467.79 : x
  2. Step 2: Convert to fraction form
    815,185.62/1,222,436.34 = 309,467.79/x
  3. Step 3: Cross multiply
    815,185.62x = 1,222,436.34 × 309,467.79
  4. Step 4: Simplify right side
    815,185.62x = 378,304,672,555.49
  5. Step 5: Solve for x
    x = 378,304,672,555.49/815,185.62
  6. Step 6: Final answer
    x = 464,071.82

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Double scale
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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.