Home / 743,123.92-1,025,522.76-420,825.28

Finding the Fourth Proportional to 743,123.92, 1,025,522.76 and 420,825.28

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Solution

The fourth proportional to 743,123.92, 1,025,522.76 and 420,825.28 is: 580,745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,123.92 : 1,025,522.76 = 420,825.28 : x
  2. Step 2: Convert to fraction form
    743,123.92/1,025,522.76 = 420,825.28/x
  3. Step 3: Cross multiply
    743,123.92x = 1,025,522.76 × 420,825.28
  4. Step 4: Simplify right side
    743,123.92x = 431,565,902,623.37
  5. Step 5: Solve for x
    x = 431,565,902,623.37/743,123.92
  6. Step 6: Final answer
    x = 580,745.54

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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.