Home / 815,269.35-1,217,414.20-665,806.35

Finding the Fourth Proportional to 815,269.35, 1,217,414.20 and 665,806.35

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Solution

The fourth proportional to 815,269.35, 1,217,414.20 and 665,806.35 is: 994,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,269.35 : 1,217,414.20 = 665,806.35 : x
  2. Step 2: Convert to fraction form
    815,269.35/1,217,414.20 = 665,806.35/x
  3. Step 3: Cross multiply
    815,269.35x = 1,217,414.20 × 665,806.35
  4. Step 4: Simplify right side
    815,269.35x = 810,562,103,275.65
  5. Step 5: Solve for x
    x = 810,562,103,275.65/815,269.35
  6. Step 6: Final answer
    x = 994,226.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.