Home / 579,391.26-869,336.01-280,096.89

Finding the Fourth Proportional to 579,391.26, 869,336.01 and 280,096.89

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Solution

The fourth proportional to 579,391.26, 869,336.01 and 280,096.89 is: 420,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,391.26 : 869,336.01 = 280,096.89 : x
  2. Step 2: Convert to fraction form
    579,391.26/869,336.01 = 280,096.89/x
  3. Step 3: Cross multiply
    579,391.26x = 869,336.01 × 280,096.89
  4. Step 4: Simplify right side
    579,391.26x = 243,498,312,766.01
  5. Step 5: Solve for x
    x = 243,498,312,766.01/579,391.26
  6. Step 6: Final answer
    x = 420,265.77

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Double scale
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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.