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Finding the Fourth Proportional to 654,187.39, 980,640.43 and 366,139.70

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Solution

The fourth proportional to 654,187.39, 980,640.43 and 366,139.70 is: 548,850.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,187.39 : 980,640.43 = 366,139.70 : x
  2. Step 2: Convert to fraction form
    654,187.39/980,640.43 = 366,139.70/x
  3. Step 3: Cross multiply
    654,187.39x = 980,640.43 × 366,139.70
  4. Step 4: Simplify right side
    654,187.39x = 359,051,393,970.86
  5. Step 5: Solve for x
    x = 359,051,393,970.86/654,187.39
  6. Step 6: Final answer
    x = 548,850.99

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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.