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Finding the Fourth Proportional to 548,734.60, 823,101.90 and 489,248.20

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Solution

The fourth proportional to 548,734.60, 823,101.90 and 489,248.20 is: 733,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,734.60 : 823,101.90 = 489,248.20 : x
  2. Step 2: Convert to fraction form
    548,734.60/823,101.90 = 489,248.20/x
  3. Step 3: Cross multiply
    548,734.60x = 823,101.90 × 489,248.20
  4. Step 4: Simplify right side
    548,734.60x = 402,701,122,991.58
  5. Step 5: Solve for x
    x = 402,701,122,991.58/548,734.60
  6. Step 6: Final answer
    x = 733,872.30

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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.