Home / 485,334.85-669,764.33-281,506.45

Finding the Fourth Proportional to 485,334.85, 669,764.33 and 281,506.45

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Solution

The fourth proportional to 485,334.85, 669,764.33 and 281,506.45 is: 388,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,334.85 : 669,764.33 = 281,506.45 : x
  2. Step 2: Convert to fraction form
    485,334.85/669,764.33 = 281,506.45/x
  3. Step 3: Cross multiply
    485,334.85x = 669,764.33 × 281,506.45
  4. Step 4: Simplify right side
    485,334.85x = 188,542,978,874.93
  5. Step 5: Solve for x
    x = 188,542,978,874.93/485,334.85
  6. Step 6: Final answer
    x = 388,480.20

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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.