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Finding the Fourth Proportional to 515,821.80, 773,732.70 and 303,245.40

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Solution

The fourth proportional to 515,821.80, 773,732.70 and 303,245.40 is: 454,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,821.80 : 773,732.70 = 303,245.40 : x
  2. Step 2: Convert to fraction form
    515,821.80/773,732.70 = 303,245.40/x
  3. Step 3: Cross multiply
    515,821.80x = 773,732.70 × 303,245.40
  4. Step 4: Simplify right side
    515,821.80x = 234,630,882,104.58
  5. Step 5: Solve for x
    x = 234,630,882,104.58/515,821.80
  6. Step 6: Final answer
    x = 454,868.10

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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.