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Finding the Fourth Proportional to 501,007.80, 691,417.26 and 274,662.84

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Solution

The fourth proportional to 501,007.80, 691,417.26 and 274,662.84 is: 379,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,007.80 : 691,417.26 = 274,662.84 : x
  2. Step 2: Convert to fraction form
    501,007.80/691,417.26 = 274,662.84/x
  3. Step 3: Cross multiply
    501,007.80x = 691,417.26 × 274,662.84
  4. Step 4: Simplify right side
    501,007.80x = 189,906,628,256.62
  5. Step 5: Solve for x
    x = 189,906,628,256.62/501,007.80
  6. Step 6: Final answer
    x = 379,049.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.