Home / 812,119.54-1,217,758.79-432,938.43

Finding the Fourth Proportional to 812,119.54, 1,217,758.79 and 432,938.43

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Solution

The fourth proportional to 812,119.54, 1,217,758.79 and 432,938.43 is: 649,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,119.54 : 1,217,758.79 = 432,938.43 : x
  2. Step 2: Convert to fraction form
    812,119.54/1,217,758.79 = 432,938.43/x
  3. Step 3: Cross multiply
    812,119.54x = 1,217,758.79 × 432,938.43
  4. Step 4: Simplify right side
    812,119.54x = 527,214,578,661.30
  5. Step 5: Solve for x
    x = 527,214,578,661.30/812,119.54
  6. Step 6: Final answer
    x = 649,183.47

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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.