Home / 812,216.25-1,118,354.85-721,414.44

Finding the Fourth Proportional to 812,216.25, 1,118,354.85 and 721,414.44

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Solution

The fourth proportional to 812,216.25, 1,118,354.85 and 721,414.44 is: 993,328.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,216.25 : 1,118,354.85 = 721,414.44 : x
  2. Step 2: Convert to fraction form
    812,216.25/1,118,354.85 = 721,414.44/x
  3. Step 3: Cross multiply
    812,216.25x = 1,118,354.85 × 721,414.44
  4. Step 4: Simplify right side
    812,216.25x = 806,797,337,834.03
  5. Step 5: Solve for x
    x = 806,797,337,834.03/812,216.25
  6. Step 6: Final answer
    x = 993,328.24

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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.