Home / 682,819.20-942,149.78-392,374.66

Finding the Fourth Proportional to 682,819.20, 942,149.78 and 392,374.66

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Solution

The fourth proportional to 682,819.20, 942,149.78 and 392,374.66 is: 541,396.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,819.20 : 942,149.78 = 392,374.66 : x
  2. Step 2: Convert to fraction form
    682,819.20/942,149.78 = 392,374.66/x
  3. Step 3: Cross multiply
    682,819.20x = 942,149.78 × 392,374.66
  4. Step 4: Simplify right side
    682,819.20x = 369,675,699,596.58
  5. Step 5: Solve for x
    x = 369,675,699,596.58/682,819.20
  6. Step 6: Final answer
    x = 541,396.17

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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.