Home / 685,977.30-1,029,004.83-212,729.94

Finding the Fourth Proportional to 685,977.30, 1,029,004.83 and 212,729.94

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Solution

The fourth proportional to 685,977.30, 1,029,004.83 and 212,729.94 is: 319,106.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,977.30 : 1,029,004.83 = 212,729.94 : x
  2. Step 2: Convert to fraction form
    685,977.30/1,029,004.83 = 212,729.94/x
  3. Step 3: Cross multiply
    685,977.30x = 1,029,004.83 × 212,729.94
  4. Step 4: Simplify right side
    685,977.30x = 218,900,135,745.61
  5. Step 5: Solve for x
    x = 218,900,135,745.61/685,977.30
  6. Step 6: Final answer
    x = 319,106.97

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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.