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Finding the Fourth Proportional to 413,792.20, 620,105.10 and 255,550.60

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Solution

The fourth proportional to 413,792.20, 620,105.10 and 255,550.60 is: 382,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,792.20 : 620,105.10 = 255,550.60 : x
  2. Step 2: Convert to fraction form
    413,792.20/620,105.10 = 255,550.60/x
  3. Step 3: Cross multiply
    413,792.20x = 620,105.10 × 255,550.60
  4. Step 4: Simplify right side
    413,792.20x = 158,468,230,368.06
  5. Step 5: Solve for x
    x = 158,468,230,368.06/413,792.20
  6. Step 6: Final answer
    x = 382,965.73

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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.