Home / 852,647.20-1,279,431.60-379,405.60

Finding the Fourth Proportional to 852,647.20, 1,279,431.60 and 379,405.60

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Solution

The fourth proportional to 852,647.20, 1,279,431.60 and 379,405.60 is: 569,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,647.20 : 1,279,431.60 = 379,405.60 : x
  2. Step 2: Convert to fraction form
    852,647.20/1,279,431.60 = 379,405.60/x
  3. Step 3: Cross multiply
    852,647.20x = 1,279,431.60 × 379,405.60
  4. Step 4: Simplify right side
    852,647.20x = 485,423,513,856.96
  5. Step 5: Solve for x
    x = 485,423,513,856.96/852,647.20
  6. Step 6: Final answer
    x = 569,313.44

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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.