Home / 809,520.38-1,116,099.70-663,789.23

Finding the Fourth Proportional to 809,520.38, 1,116,099.70 and 663,789.23

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Solution

The fourth proportional to 809,520.38, 1,116,099.70 and 663,789.23 is: 915,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,520.38 : 1,116,099.70 = 663,789.23 : x
  2. Step 2: Convert to fraction form
    809,520.38/1,116,099.70 = 663,789.23/x
  3. Step 3: Cross multiply
    809,520.38x = 1,116,099.70 × 663,789.23
  4. Step 4: Simplify right side
    809,520.38x = 740,854,960,466.23
  5. Step 5: Solve for x
    x = 740,854,960,466.23/809,520.38
  6. Step 6: Final answer
    x = 915,177.65

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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.