Home / 919,687.76-1,379,739.22-280,048.68

Finding the Fourth Proportional to 919,687.76, 1,379,739.22 and 280,048.68

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Solution

The fourth proportional to 919,687.76, 1,379,739.22 and 280,048.68 is: 420,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,687.76 : 1,379,739.22 = 280,048.68 : x
  2. Step 2: Convert to fraction form
    919,687.76/1,379,739.22 = 280,048.68/x
  3. Step 3: Cross multiply
    919,687.76x = 1,379,739.22 × 280,048.68
  4. Step 4: Simplify right side
    919,687.76x = 386,394,147,305.23
  5. Step 5: Solve for x
    x = 386,394,147,305.23/919,687.76
  6. Step 6: Final answer
    x = 420,136.23

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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.