Home / 579,211.20-868,816.80-478,827.90

Finding the Fourth Proportional to 579,211.20, 868,816.80 and 478,827.90

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Solution

The fourth proportional to 579,211.20, 868,816.80 and 478,827.90 is: 718,241.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,211.20 : 868,816.80 = 478,827.90 : x
  2. Step 2: Convert to fraction form
    579,211.20/868,816.80 = 478,827.90/x
  3. Step 3: Cross multiply
    579,211.20x = 868,816.80 × 478,827.90
  4. Step 4: Simplify right side
    579,211.20x = 416,013,723,828.72
  5. Step 5: Solve for x
    x = 416,013,723,828.72/579,211.20
  6. Step 6: Final answer
    x = 718,241.85

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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.