Home / 682,578.18-942,145.20-396,190.50

Finding the Fourth Proportional to 682,578.18, 942,145.20 and 396,190.50

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Solution

The fourth proportional to 682,578.18, 942,145.20 and 396,190.50 is: 546,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,578.18 : 942,145.20 = 396,190.50 : x
  2. Step 2: Convert to fraction form
    682,578.18/942,145.20 = 396,190.50/x
  3. Step 3: Cross multiply
    682,578.18x = 942,145.20 × 396,190.50
  4. Step 4: Simplify right side
    682,578.18x = 373,268,977,860.60
  5. Step 5: Solve for x
    x = 373,268,977,860.60/682,578.18
  6. Step 6: Final answer
    x = 546,851.61

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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.