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Finding the Fourth Proportional to 449,493.60, 674,240.40 and 408,021.60

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Solution

The fourth proportional to 449,493.60, 674,240.40 and 408,021.60 is: 612,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,493.60 : 674,240.40 = 408,021.60 : x
  2. Step 2: Convert to fraction form
    449,493.60/674,240.40 = 408,021.60/x
  3. Step 3: Cross multiply
    449,493.60x = 674,240.40 × 408,021.60
  4. Step 4: Simplify right side
    449,493.60x = 275,104,646,792.64
  5. Step 5: Solve for x
    x = 275,104,646,792.64/449,493.60
  6. Step 6: Final answer
    x = 612,032.40

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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.