Home / 852,651.20-1,279,437.60-379,409.60

Finding the Fourth Proportional to 852,651.20, 1,279,437.60 and 379,409.60

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Solution

The fourth proportional to 852,651.20, 1,279,437.60 and 379,409.60 is: 569,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,651.20 : 1,279,437.60 = 379,409.60 : x
  2. Step 2: Convert to fraction form
    852,651.20/1,279,437.60 = 379,409.60/x
  3. Step 3: Cross multiply
    852,651.20x = 1,279,437.60 × 379,409.60
  4. Step 4: Simplify right side
    852,651.20x = 485,430,908,040.96
  5. Step 5: Solve for x
    x = 485,430,908,040.96/852,651.20
  6. Step 6: Final answer
    x = 569,319.45

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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.