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Finding the Fourth Proportional to 519,122.70, 779,121.45 and 253,110.60

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Solution

The fourth proportional to 519,122.70, 779,121.45 and 253,110.60 is: 379,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,122.70 : 779,121.45 = 253,110.60 : x
  2. Step 2: Convert to fraction form
    519,122.70/779,121.45 = 253,110.60/x
  3. Step 3: Cross multiply
    519,122.70x = 779,121.45 × 253,110.60
  4. Step 4: Simplify right side
    519,122.70x = 197,203,897,682.37
  5. Step 5: Solve for x
    x = 197,203,897,682.37/519,122.70
  6. Step 6: Final answer
    x = 379,879.16

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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.