Home / 743,143.92-1,025,550.36-420,845.28

Finding the Fourth Proportional to 743,143.92, 1,025,550.36 and 420,845.28

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Solution

The fourth proportional to 743,143.92, 1,025,550.36 and 420,845.28 is: 580,773.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,143.92 : 1,025,550.36 = 420,845.28 : x
  2. Step 2: Convert to fraction form
    743,143.92/1,025,550.36 = 420,845.28/x
  3. Step 3: Cross multiply
    743,143.92x = 1,025,550.36 × 420,845.28
  4. Step 4: Simplify right side
    743,143.92x = 431,598,028,408.30
  5. Step 5: Solve for x
    x = 431,598,028,408.30/743,143.92
  6. Step 6: Final answer
    x = 580,773.14

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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.