Home / 682,815.06-942,144.15-392,370.54

Finding the Fourth Proportional to 682,815.06, 942,144.15 and 392,370.54

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Solution

The fourth proportional to 682,815.06, 942,144.15 and 392,370.54 is: 541,390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,815.06 : 942,144.15 = 392,370.54 : x
  2. Step 2: Convert to fraction form
    682,815.06/942,144.15 = 392,370.54/x
  3. Step 3: Cross multiply
    682,815.06x = 942,144.15 × 392,370.54
  4. Step 4: Simplify right side
    682,815.06x = 369,669,608,893.34
  5. Step 5: Solve for x
    x = 369,669,608,893.34/682,815.06
  6. Step 6: Final answer
    x = 541,390.53

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Double scale
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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.