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Finding the Fourth Proportional to 548,712.60, 823,068.90 and 489,226.20

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Solution

The fourth proportional to 548,712.60, 823,068.90 and 489,226.20 is: 733,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,712.60 : 823,068.90 = 489,226.20 : x
  2. Step 2: Convert to fraction form
    548,712.60/823,068.90 = 489,226.20/x
  3. Step 3: Cross multiply
    548,712.60x = 823,068.90 × 489,226.20
  4. Step 4: Simplify right side
    548,712.60x = 402,666,870,285.18
  5. Step 5: Solve for x
    x = 402,666,870,285.18/548,712.60
  6. Step 6: Final answer
    x = 733,839.30

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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.