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Finding the Fourth Proportional to 519,874.92, 779,812.38 and 220,348.80

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Solution

The fourth proportional to 519,874.92, 779,812.38 and 220,348.80 is: 330,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,874.92 : 779,812.38 = 220,348.80 : x
  2. Step 2: Convert to fraction form
    519,874.92/779,812.38 = 220,348.80/x
  3. Step 3: Cross multiply
    519,874.92x = 779,812.38 × 220,348.80
  4. Step 4: Simplify right side
    519,874.92x = 171,830,722,158.14
  5. Step 5: Solve for x
    x = 171,830,722,158.14/519,874.92
  6. Step 6: Final answer
    x = 330,523.20

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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.