Home / 853,359.57-1,280,226.31-320,880.60

Finding the Fourth Proportional to 853,359.57, 1,280,226.31 and 320,880.60

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Solution

The fourth proportional to 853,359.57, 1,280,226.31 and 320,880.60 is: 481,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,359.57 : 1,280,226.31 = 320,880.60 : x
  2. Step 2: Convert to fraction form
    853,359.57/1,280,226.31 = 320,880.60/x
  3. Step 3: Cross multiply
    853,359.57x = 1,280,226.31 × 320,880.60
  4. Step 4: Simplify right side
    853,359.57x = 410,799,785,686.39
  5. Step 5: Solve for x
    x = 410,799,785,686.39/853,359.57
  6. Step 6: Final answer
    x = 481,391.20

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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.