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Finding the Fourth Proportional to 980,367.68, 1,470,599.76 and 270,380

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Solution

The fourth proportional to 980,367.68, 1,470,599.76 and 270,380 is: 405,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,367.68 : 1,470,599.76 = 270,380 : x
  2. Step 2: Convert to fraction form
    980,367.68/1,470,599.76 = 270,380/x
  3. Step 3: Cross multiply
    980,367.68x = 1,470,599.76 × 270,380
  4. Step 4: Simplify right side
    980,367.68x = 397,620,763,108.80
  5. Step 5: Solve for x
    x = 397,620,763,108.80/980,367.68
  6. Step 6: Final answer
    x = 405,583.30

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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.