Home / 657,634.20-985,904.55-278,845.80

Finding the Fourth Proportional to 657,634.20, 985,904.55 and 278,845.80

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Solution

The fourth proportional to 657,634.20, 985,904.55 and 278,845.80 is: 418,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,634.20 : 985,904.55 = 278,845.80 : x
  2. Step 2: Convert to fraction form
    657,634.20/985,904.55 = 278,845.80/x
  3. Step 3: Cross multiply
    657,634.20x = 985,904.55 × 278,845.80
  4. Step 4: Simplify right side
    657,634.20x = 274,915,342,968.39
  5. Step 5: Solve for x
    x = 274,915,342,968.39/657,634.20
  6. Step 6: Final answer
    x = 418,036.87

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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.