Home / 790,819.92-1,091,331.23-428,243.68

Finding the Fourth Proportional to 790,819.92, 1,091,331.23 and 428,243.68

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Solution

The fourth proportional to 790,819.92, 1,091,331.23 and 428,243.68 is: 590,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,819.92 : 1,091,331.23 = 428,243.68 : x
  2. Step 2: Convert to fraction form
    790,819.92/1,091,331.23 = 428,243.68/x
  3. Step 3: Cross multiply
    790,819.92x = 1,091,331.23 × 428,243.68
  4. Step 4: Simplify right side
    790,819.92x = 467,355,704,326.44
  5. Step 5: Solve for x
    x = 467,355,704,326.44/790,819.92
  6. Step 6: Final answer
    x = 590,976.14

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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.