Home / 805,162.20-1,111,111.38-442,578.30

Finding the Fourth Proportional to 805,162.20, 1,111,111.38 and 442,578.30

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Solution

The fourth proportional to 805,162.20, 1,111,111.38 and 442,578.30 is: 610,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,162.20 : 1,111,111.38 = 442,578.30 : x
  2. Step 2: Convert to fraction form
    805,162.20/1,111,111.38 = 442,578.30/x
  3. Step 3: Cross multiply
    805,162.20x = 1,111,111.38 × 442,578.30
  4. Step 4: Simplify right side
    805,162.20x = 491,753,785,671.05
  5. Step 5: Solve for x
    x = 491,753,785,671.05/805,162.20
  6. Step 6: Final answer
    x = 610,751.21

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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.