Home / 919,849.79-1,379,822.37-280,104.11

Finding the Fourth Proportional to 919,849.79, 1,379,822.37 and 280,104.11

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Solution

The fourth proportional to 919,849.79, 1,379,822.37 and 280,104.11 is: 420,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,849.79 : 1,379,822.37 = 280,104.11 : x
  2. Step 2: Convert to fraction form
    919,849.79/1,379,822.37 = 280,104.11/x
  3. Step 3: Cross multiply
    919,849.79x = 1,379,822.37 × 280,104.11
  4. Step 4: Simplify right side
    919,849.79x = 386,493,914,131.77
  5. Step 5: Solve for x
    x = 386,493,914,131.77/919,849.79
  6. Step 6: Final answer
    x = 420,170.68

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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.