Home / 405,996.80-609,012.48-125,519.36

Finding the Fourth Proportional to 405,996.80, 609,012.48 and 125,519.36

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Solution

The fourth proportional to 405,996.80, 609,012.48 and 125,519.36 is: 188,284.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,996.80 : 609,012.48 = 125,519.36 : x
  2. Step 2: Convert to fraction form
    405,996.80/609,012.48 = 125,519.36/x
  3. Step 3: Cross multiply
    405,996.80x = 609,012.48 × 125,519.36
  4. Step 4: Simplify right side
    405,996.80x = 76,442,856,721.61
  5. Step 5: Solve for x
    x = 76,442,856,721.61/405,996.80
  6. Step 6: Final answer
    x = 188,284.38

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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.