Home / 715,180.44-986,708.04-405,040.56

Finding the Fourth Proportional to 715,180.44, 986,708.04 and 405,040.56

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Solution

The fourth proportional to 715,180.44, 986,708.04 and 405,040.56 is: 558,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,180.44 : 986,708.04 = 405,040.56 : x
  2. Step 2: Convert to fraction form
    715,180.44/986,708.04 = 405,040.56/x
  3. Step 3: Cross multiply
    715,180.44x = 986,708.04 × 405,040.56
  4. Step 4: Simplify right side
    715,180.44x = 399,656,777,078.10
  5. Step 5: Solve for x
    x = 399,656,777,078.10/715,180.44
  6. Step 6: Final answer
    x = 558,819.50

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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.