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Finding the Fourth Proportional to 449,848.60, 674,772.90 and 415,634.20

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Solution

The fourth proportional to 449,848.60, 674,772.90 and 415,634.20 is: 623,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,848.60 : 674,772.90 = 415,634.20 : x
  2. Step 2: Convert to fraction form
    449,848.60/674,772.90 = 415,634.20/x
  3. Step 3: Cross multiply
    449,848.60x = 674,772.90 × 415,634.20
  4. Step 4: Simplify right side
    449,848.60x = 280,458,694,473.18
  5. Step 5: Solve for x
    x = 280,458,694,473.18/449,848.60
  6. Step 6: Final answer
    x = 623,451.30

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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.