Home / 815,375.16-1,222,785.92-309,814.67

Finding the Fourth Proportional to 815,375.16, 1,222,785.92 and 309,814.67

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Solution

The fourth proportional to 815,375.16, 1,222,785.92 and 309,814.67 is: 464,616.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,375.16 : 1,222,785.92 = 309,814.67 : x
  2. Step 2: Convert to fraction form
    815,375.16/1,222,785.92 = 309,814.67/x
  3. Step 3: Cross multiply
    815,375.16x = 1,222,785.92 × 309,814.67
  4. Step 4: Simplify right side
    815,375.16x = 378,837,020,116.95
  5. Step 5: Solve for x
    x = 378,837,020,116.95/815,375.16
  6. Step 6: Final answer
    x = 464,616.83

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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.