Home / 685,484.66-1,027,943.16-258,947.72

Finding the Fourth Proportional to 685,484.66, 1,027,943.16 and 258,947.72

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Solution

The fourth proportional to 685,484.66, 1,027,943.16 and 258,947.72 is: 388,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,484.66 : 1,027,943.16 = 258,947.72 : x
  2. Step 2: Convert to fraction form
    685,484.66/1,027,943.16 = 258,947.72/x
  3. Step 3: Cross multiply
    685,484.66x = 1,027,943.16 × 258,947.72
  4. Step 4: Simplify right side
    685,484.66x = 266,183,537,571.60
  5. Step 5: Solve for x
    x = 266,183,537,571.60/685,484.66
  6. Step 6: Final answer
    x = 388,314.36

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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.