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Finding the Fourth Proportional to 519,981.75, 779,474.33 and 220,049.64

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Solution

The fourth proportional to 519,981.75, 779,474.33 and 220,049.64 is: 329,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,981.75 : 779,474.33 = 220,049.64 : x
  2. Step 2: Convert to fraction form
    519,981.75/779,474.33 = 220,049.64/x
  3. Step 3: Cross multiply
    519,981.75x = 779,474.33 × 220,049.64
  4. Step 4: Simplify right side
    519,981.75x = 171,523,045,705.74
  5. Step 5: Solve for x
    x = 171,523,045,705.74/519,981.75
  6. Step 6: Final answer
    x = 329,863.59

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Double scale
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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.