Home / 790,806.38-1,091,310.82-428,230.21

Finding the Fourth Proportional to 790,806.38, 1,091,310.82 and 428,230.21

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Solution

The fourth proportional to 790,806.38, 1,091,310.82 and 428,230.21 is: 590,956.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,806.38 : 1,091,310.82 = 428,230.21 : x
  2. Step 2: Convert to fraction form
    790,806.38/1,091,310.82 = 428,230.21/x
  3. Step 3: Cross multiply
    790,806.38x = 1,091,310.82 × 428,230.21
  4. Step 4: Simplify right side
    790,806.38x = 467,332,261,623.87
  5. Step 5: Solve for x
    x = 467,332,261,623.87/790,806.38
  6. Step 6: Final answer
    x = 590,956.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.