Home / 454,964.20-682,478.70-139,420.60

Finding the Fourth Proportional to 454,964.20, 682,478.70 and 139,420.60

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Solution

The fourth proportional to 454,964.20, 682,478.70 and 139,420.60 is: 209,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,964.20 : 682,478.70 = 139,420.60 : x
  2. Step 2: Convert to fraction form
    454,964.20/682,478.70 = 139,420.60/x
  3. Step 3: Cross multiply
    454,964.20x = 682,478.70 × 139,420.60
  4. Step 4: Simplify right side
    454,964.20x = 95,151,589,841.22
  5. Step 5: Solve for x
    x = 95,151,589,841.22/454,964.20
  6. Step 6: Final answer
    x = 209,140.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.