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Finding the Fourth Proportional to 419,746.20, 629,619.30 and 354,792.30

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Solution

The fourth proportional to 419,746.20, 629,619.30 and 354,792.30 is: 532,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,746.20 : 629,619.30 = 354,792.30 : x
  2. Step 2: Convert to fraction form
    419,746.20/629,619.30 = 354,792.30/x
  3. Step 3: Cross multiply
    419,746.20x = 629,619.30 × 354,792.30
  4. Step 4: Simplify right side
    419,746.20x = 223,384,079,571.39
  5. Step 5: Solve for x
    x = 223,384,079,571.39/419,746.20
  6. Step 6: Final answer
    x = 532,188.45

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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.