Home / 685,487.66-1,027,947.66-258,950.72

Finding the Fourth Proportional to 685,487.66, 1,027,947.66 and 258,950.72

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Solution

The fourth proportional to 685,487.66, 1,027,947.66 and 258,950.72 is: 388,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,487.66 : 1,027,947.66 = 258,950.72 : x
  2. Step 2: Convert to fraction form
    685,487.66/1,027,947.66 = 258,950.72/x
  3. Step 3: Cross multiply
    685,487.66x = 1,027,947.66 × 258,950.72
  4. Step 4: Simplify right side
    685,487.66x = 266,187,786,679.32
  5. Step 5: Solve for x
    x = 266,187,786,679.32/685,487.66
  6. Step 6: Final answer
    x = 388,318.86

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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.