Home / 685,240.22-945,731.04-394,795.28

Finding the Fourth Proportional to 685,240.22, 945,731.04 and 394,795.28

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Solution

The fourth proportional to 685,240.22, 945,731.04 and 394,795.28 is: 544,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,240.22 : 945,731.04 = 394,795.28 : x
  2. Step 2: Convert to fraction form
    685,240.22/945,731.04 = 394,795.28/x
  3. Step 3: Cross multiply
    685,240.22x = 945,731.04 × 394,795.28
  4. Step 4: Simplify right side
    685,240.22x = 373,370,150,741.49
  5. Step 5: Solve for x
    x = 373,370,150,741.49/685,240.22
  6. Step 6: Final answer
    x = 544,874.83

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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.