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Finding the Fourth Proportional to 503,410.60, 755,115.90 and 279,461.80

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Solution

The fourth proportional to 503,410.60, 755,115.90 and 279,461.80 is: 419,192.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,410.60 : 755,115.90 = 279,461.80 : x
  2. Step 2: Convert to fraction form
    503,410.60/755,115.90 = 279,461.80/x
  3. Step 3: Cross multiply
    503,410.60x = 755,115.90 × 279,461.80
  4. Step 4: Simplify right side
    503,410.60x = 211,026,048,622.62
  5. Step 5: Solve for x
    x = 211,026,048,622.62/503,410.60
  6. Step 6: Final answer
    x = 419,192.70

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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.