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Finding the Fourth Proportional to 419,220.60, 628,830.90 and 336,276.60

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Solution

The fourth proportional to 419,220.60, 628,830.90 and 336,276.60 is: 504,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,220.60 : 628,830.90 = 336,276.60 : x
  2. Step 2: Convert to fraction form
    419,220.60/628,830.90 = 336,276.60/x
  3. Step 3: Cross multiply
    419,220.60x = 628,830.90 × 336,276.60
  4. Step 4: Simplify right side
    419,220.60x = 211,461,117,026.94
  5. Step 5: Solve for x
    x = 211,461,117,026.94/419,220.60
  6. Step 6: Final answer
    x = 504,414.90

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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.