Home / 853,394.60-1,280,087.28-347,953.61

Finding the Fourth Proportional to 853,394.60, 1,280,087.28 and 347,953.61

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Solution

The fourth proportional to 853,394.60, 1,280,087.28 and 347,953.61 is: 521,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,394.60 : 1,280,087.28 = 347,953.61 : x
  2. Step 2: Convert to fraction form
    853,394.60/1,280,087.28 = 347,953.61/x
  3. Step 3: Cross multiply
    853,394.60x = 1,280,087.28 × 347,953.61
  4. Step 4: Simplify right side
    853,394.60x = 445,410,993,391.30
  5. Step 5: Solve for x
    x = 445,410,993,391.30/853,394.60
  6. Step 6: Final answer
    x = 521,928.53

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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.