Home / 778,021.28-1,167,189.20-328,743.44

Finding the Fourth Proportional to 778,021.28, 1,167,189.20 and 328,743.44

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Solution

The fourth proportional to 778,021.28, 1,167,189.20 and 328,743.44 is: 493,181.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,021.28 : 1,167,189.20 = 328,743.44 : x
  2. Step 2: Convert to fraction form
    778,021.28/1,167,189.20 = 328,743.44/x
  3. Step 3: Cross multiply
    778,021.28x = 1,167,189.20 × 328,743.44
  4. Step 4: Simplify right side
    778,021.28x = 383,705,792,738.85
  5. Step 5: Solve for x
    x = 383,705,792,738.85/778,021.28
  6. Step 6: Final answer
    x = 493,181.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.