Home / 911,324.40-1,366,986.60-280,156.20

Finding the Fourth Proportional to 911,324.40, 1,366,986.60 and 280,156.20

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Solution

The fourth proportional to 911,324.40, 1,366,986.60 and 280,156.20 is: 420,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,324.40 : 1,366,986.60 = 280,156.20 : x
  2. Step 2: Convert to fraction form
    911,324.40/1,366,986.60 = 280,156.20/x
  3. Step 3: Cross multiply
    911,324.40x = 1,366,986.60 × 280,156.20
  4. Step 4: Simplify right side
    911,324.40x = 382,969,771,306.92
  5. Step 5: Solve for x
    x = 382,969,771,306.92/911,324.40
  6. Step 6: Final answer
    x = 420,234.30

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Similar ratio
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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.