Home / 790,639.62-1,091,069.45-428,060.54

Finding the Fourth Proportional to 790,639.62, 1,091,069.45 and 428,060.54

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Solution

The fourth proportional to 790,639.62, 1,091,069.45 and 428,060.54 is: 590,716.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,639.62 : 1,091,069.45 = 428,060.54 : x
  2. Step 2: Convert to fraction form
    790,639.62/1,091,069.45 = 428,060.54/x
  3. Step 3: Cross multiply
    790,639.62x = 1,091,069.45 × 428,060.54
  4. Step 4: Simplify right side
    790,639.62x = 467,043,770,348.85
  5. Step 5: Solve for x
    x = 467,043,770,348.85/790,639.62
  6. Step 6: Final answer
    x = 590,716.38

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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.