Home / 805,122.45-1,207,682.90-206,082.65

Finding the Fourth Proportional to 805,122.45, 1,207,682.90 and 206,082.65

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Solution

The fourth proportional to 805,122.45, 1,207,682.90 and 206,082.65 is: 309,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,122.45 : 1,207,682.90 = 206,082.65 : x
  2. Step 2: Convert to fraction form
    805,122.45/1,207,682.90 = 206,082.65/x
  3. Step 3: Cross multiply
    805,122.45x = 1,207,682.90 × 206,082.65
  4. Step 4: Simplify right side
    805,122.45x = 248,882,488,360.07
  5. Step 5: Solve for x
    x = 248,882,488,360.07/805,122.45
  6. Step 6: Final answer
    x = 309,123.77

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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.