Home / 820,872.20-1,231,308.30-288,216.20

Finding the Fourth Proportional to 820,872.20, 1,231,308.30 and 288,216.20

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Solution

The fourth proportional to 820,872.20, 1,231,308.30 and 288,216.20 is: 432,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,872.20 : 1,231,308.30 = 288,216.20 : x
  2. Step 2: Convert to fraction form
    820,872.20/1,231,308.30 = 288,216.20/x
  3. Step 3: Cross multiply
    820,872.20x = 1,231,308.30 × 288,216.20
  4. Step 4: Simplify right side
    820,872.20x = 354,882,999,254.46
  5. Step 5: Solve for x
    x = 354,882,999,254.46/820,872.20
  6. Step 6: Final answer
    x = 432,324.30

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Similar ratio
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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.