Home / 853,489.54-1,280,578.57-379,850.94

Finding the Fourth Proportional to 853,489.54, 1,280,578.57 and 379,850.94

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Solution

The fourth proportional to 853,489.54, 1,280,578.57 and 379,850.94 is: 569,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,489.54 : 1,280,578.57 = 379,850.94 : x
  2. Step 2: Convert to fraction form
    853,489.54/1,280,578.57 = 379,850.94/x
  3. Step 3: Cross multiply
    853,489.54x = 1,280,578.57 × 379,850.94
  4. Step 4: Simplify right side
    853,489.54x = 486,428,973,558.36
  5. Step 5: Solve for x
    x = 486,428,973,558.36/853,489.54
  6. Step 6: Final answer
    x = 569,929.63

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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.