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Finding the Fourth Proportional to 503,423.60, 755,135.40 and 279,474.80

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Solution

The fourth proportional to 503,423.60, 755,135.40 and 279,474.80 is: 419,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,423.60 : 755,135.40 = 279,474.80 : x
  2. Step 2: Convert to fraction form
    503,423.60/755,135.40 = 279,474.80/x
  3. Step 3: Cross multiply
    503,423.60x = 755,135.40 × 279,474.80
  4. Step 4: Simplify right side
    503,423.60x = 211,041,314,887.92
  5. Step 5: Solve for x
    x = 211,041,314,887.92/503,423.60
  6. Step 6: Final answer
    x = 419,212.20

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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.