Home / 928,441.78-1,392,662.67-612,824.87

Finding the Fourth Proportional to 928,441.78, 1,392,662.67 and 612,824.87

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Solution

The fourth proportional to 928,441.78, 1,392,662.67 and 612,824.87 is: 919,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,441.78 : 1,392,662.67 = 612,824.87 : x
  2. Step 2: Convert to fraction form
    928,441.78/1,392,662.67 = 612,824.87/x
  3. Step 3: Cross multiply
    928,441.78x = 1,392,662.67 × 612,824.87
  4. Step 4: Simplify right side
    928,441.78x = 853,458,320,880.17
  5. Step 5: Solve for x
    x = 853,458,320,880.17/928,441.78
  6. Step 6: Final answer
    x = 919,237.31

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Double scale
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Similar ratio
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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.