Home / 685,122.44-945,390.08-394,776.32

Finding the Fourth Proportional to 685,122.44, 945,390.08 and 394,776.32

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Solution

The fourth proportional to 685,122.44, 945,390.08 and 394,776.32 is: 544,745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,122.44 : 945,390.08 = 394,776.32 : x
  2. Step 2: Convert to fraction form
    685,122.44/945,390.08 = 394,776.32/x
  3. Step 3: Cross multiply
    685,122.44x = 945,390.08 × 394,776.32
  4. Step 4: Simplify right side
    685,122.44x = 373,217,613,006.90
  5. Step 5: Solve for x
    x = 373,217,613,006.90/685,122.44
  6. Step 6: Final answer
    x = 544,745.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.