Home / 815,764.08-1,223,670.24-389,344.84

Finding the Fourth Proportional to 815,764.08, 1,223,670.24 and 389,344.84

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Solution

The fourth proportional to 815,764.08, 1,223,670.24 and 389,344.84 is: 584,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,764.08 : 1,223,670.24 = 389,344.84 : x
  2. Step 2: Convert to fraction form
    815,764.08/1,223,670.24 = 389,344.84/x
  3. Step 3: Cross multiply
    815,764.08x = 1,223,670.24 × 389,344.84
  4. Step 4: Simplify right side
    815,764.08x = 476,429,693,805.56
  5. Step 5: Solve for x
    x = 476,429,693,805.56/815,764.08
  6. Step 6: Final answer
    x = 584,028.77

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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.