Home / 815,211.63-1,222,174.26-515,059.65

Finding the Fourth Proportional to 815,211.63, 1,222,174.26 and 515,059.65

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Solution

The fourth proportional to 815,211.63, 1,222,174.26 and 515,059.65 is: 772,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,211.63 : 1,222,174.26 = 515,059.65 : x
  2. Step 2: Convert to fraction form
    815,211.63/1,222,174.26 = 515,059.65/x
  3. Step 3: Cross multiply
    815,211.63x = 1,222,174.26 × 515,059.65
  4. Step 4: Simplify right side
    815,211.63x = 629,492,646,594.61
  5. Step 5: Solve for x
    x = 629,492,646,594.61/815,211.63
  6. Step 6: Final answer
    x = 772,183.10

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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.