Home / 817,912.62-1,227,119.33-418,835.95

Finding the Fourth Proportional to 817,912.62, 1,227,119.33 and 418,835.95

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Solution

The fourth proportional to 817,912.62, 1,227,119.33 and 418,835.95 is: 628,382.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,912.62 : 1,227,119.33 = 418,835.95 : x
  2. Step 2: Convert to fraction form
    817,912.62/1,227,119.33 = 418,835.95/x
  3. Step 3: Cross multiply
    817,912.62x = 1,227,119.33 × 418,835.95
  4. Step 4: Simplify right side
    817,912.62x = 513,961,685,181.94
  5. Step 5: Solve for x
    x = 513,961,685,181.94/817,912.62
  6. Step 6: Final answer
    x = 628,382.14

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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.