Home / 852,649.20-1,279,434.60-379,407.60

Finding the Fourth Proportional to 852,649.20, 1,279,434.60 and 379,407.60

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Solution

The fourth proportional to 852,649.20, 1,279,434.60 and 379,407.60 is: 569,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,649.20 : 1,279,434.60 = 379,407.60 : x
  2. Step 2: Convert to fraction form
    852,649.20/1,279,434.60 = 379,407.60/x
  3. Step 3: Cross multiply
    852,649.20x = 1,279,434.60 × 379,407.60
  4. Step 4: Simplify right side
    852,649.20x = 485,427,210,942.96
  5. Step 5: Solve for x
    x = 485,427,210,942.96/852,649.20
  6. Step 6: Final answer
    x = 569,316.44

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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.