Home / 815,029.94-1,222,505.44-309,551.47

Finding the Fourth Proportional to 815,029.94, 1,222,505.44 and 309,551.47

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Solution

The fourth proportional to 815,029.94, 1,222,505.44 and 309,551.47 is: 464,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,029.94 : 1,222,505.44 = 309,551.47 : x
  2. Step 2: Convert to fraction form
    815,029.94/1,222,505.44 = 309,551.47/x
  3. Step 3: Cross multiply
    815,029.94x = 1,222,505.44 × 309,551.47
  4. Step 4: Simplify right side
    815,029.94x = 378,428,352,204.86
  5. Step 5: Solve for x
    x = 378,428,352,204.86/815,029.94
  6. Step 6: Final answer
    x = 464,312.21

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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.