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Finding the Fourth Proportional to 505,092.80, 756,256.80 and 394,500.80

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Solution

The fourth proportional to 505,092.80, 756,256.80 and 394,500.80 is: 590,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,092.80 : 756,256.80 = 394,500.80 : x
  2. Step 2: Convert to fraction form
    505,092.80/756,256.80 = 394,500.80/x
  3. Step 3: Cross multiply
    505,092.80x = 756,256.80 × 394,500.80
  4. Step 4: Simplify right side
    505,092.80x = 298,343,912,605.44
  5. Step 5: Solve for x
    x = 298,343,912,605.44/505,092.80
  6. Step 6: Final answer
    x = 590,671.48

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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.