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Finding the Fourth Proportional to 413,741.20, 620,611.80 and 394,495.60

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Solution

The fourth proportional to 413,741.20, 620,611.80 and 394,495.60 is: 591,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,741.20 : 620,611.80 = 394,495.60 : x
  2. Step 2: Convert to fraction form
    413,741.20/620,611.80 = 394,495.60/x
  3. Step 3: Cross multiply
    413,741.20x = 620,611.80 × 394,495.60
  4. Step 4: Simplify right side
    413,741.20x = 244,828,624,408.08
  5. Step 5: Solve for x
    x = 244,828,624,408.08/413,741.20
  6. Step 6: Final answer
    x = 591,743.40

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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.