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Finding the Fourth Proportional to 419,664.40, 629,496.60 and 403,334.80

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Solution

The fourth proportional to 419,664.40, 629,496.60 and 403,334.80 is: 605,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,664.40 : 629,496.60 = 403,334.80 : x
  2. Step 2: Convert to fraction form
    419,664.40/629,496.60 = 403,334.80/x
  3. Step 3: Cross multiply
    419,664.40x = 629,496.60 × 403,334.80
  4. Step 4: Simplify right side
    419,664.40x = 253,897,885,261.68
  5. Step 5: Solve for x
    x = 253,897,885,261.68/419,664.40
  6. Step 6: Final answer
    x = 605,002.20

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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.