Home / 682,820.12-942,151.10-392,375.59

Finding the Fourth Proportional to 682,820.12, 942,151.10 and 392,375.59

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Solution

The fourth proportional to 682,820.12, 942,151.10 and 392,375.59 is: 541,397.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,820.12 : 942,151.10 = 392,375.59 : x
  2. Step 2: Convert to fraction form
    682,820.12/942,151.10 = 392,375.59/x
  3. Step 3: Cross multiply
    682,820.12x = 942,151.10 × 392,375.59
  4. Step 4: Simplify right side
    682,820.12x = 369,677,089,414.39
  5. Step 5: Solve for x
    x = 369,677,089,414.39/682,820.12
  6. Step 6: Final answer
    x = 541,397.47

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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.