Home / 989,255.39-1,483,943.22-279,336.96

Finding the Fourth Proportional to 989,255.39, 1,483,943.22 and 279,336.96

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Solution

The fourth proportional to 989,255.39, 1,483,943.22 and 279,336.96 is: 419,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,255.39 : 1,483,943.22 = 279,336.96 : x
  2. Step 2: Convert to fraction form
    989,255.39/1,483,943.22 = 279,336.96/x
  3. Step 3: Cross multiply
    989,255.39x = 1,483,943.22 × 279,336.96
  4. Step 4: Simplify right side
    989,255.39x = 414,520,187,887.41
  5. Step 5: Solve for x
    x = 414,520,187,887.41/989,255.39
  6. Step 6: Final answer
    x = 419,022.42

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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.