Home / 811,882.20-1,217,823.30-313,246.20

Finding the Fourth Proportional to 811,882.20, 1,217,823.30 and 313,246.20

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Solution

The fourth proportional to 811,882.20, 1,217,823.30 and 313,246.20 is: 469,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,882.20 : 1,217,823.30 = 313,246.20 : x
  2. Step 2: Convert to fraction form
    811,882.20/1,217,823.30 = 313,246.20/x
  3. Step 3: Cross multiply
    811,882.20x = 1,217,823.30 × 313,246.20
  4. Step 4: Simplify right side
    811,882.20x = 381,478,520,996.46
  5. Step 5: Solve for x
    x = 381,478,520,996.46/811,882.20
  6. Step 6: Final answer
    x = 469,869.30

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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.