Home / 386,519.69-579,499.13-259,845.66

Finding the Fourth Proportional to 386,519.69, 579,499.13 and 259,845.66

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Solution

The fourth proportional to 386,519.69, 579,499.13 and 259,845.66 is: 389,579.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,519.69 : 579,499.13 = 259,845.66 : x
  2. Step 2: Convert to fraction form
    386,519.69/579,499.13 = 259,845.66/x
  3. Step 3: Cross multiply
    386,519.69x = 579,499.13 × 259,845.66
  4. Step 4: Simplify right side
    386,519.69x = 150,580,332,605.05
  5. Step 5: Solve for x
    x = 150,580,332,605.05/386,519.69
  6. Step 6: Final answer
    x = 389,579.98

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1.5x scale

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.