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Finding the Fourth Proportional to 494,643.60, 741,090.60 and 419,410.80

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Solution

The fourth proportional to 494,643.60, 741,090.60 and 419,410.80 is: 628,374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,643.60 : 741,090.60 = 419,410.80 : x
  2. Step 2: Convert to fraction form
    494,643.60/741,090.60 = 419,410.80/x
  3. Step 3: Cross multiply
    494,643.60x = 741,090.60 × 419,410.80
  4. Step 4: Simplify right side
    494,643.60x = 310,821,401,418.48
  5. Step 5: Solve for x
    x = 310,821,401,418.48/494,643.60
  6. Step 6: Final answer
    x = 628,374.45

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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.