Home / 389,723.40-584,585.10-189,940.95

Finding the Fourth Proportional to 389,723.40, 584,585.10 and 189,940.95

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Solution

The fourth proportional to 389,723.40, 584,585.10 and 189,940.95 is: 284,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,723.40 : 584,585.10 = 189,940.95 : x
  2. Step 2: Convert to fraction form
    389,723.40/584,585.10 = 189,940.95/x
  3. Step 3: Cross multiply
    389,723.40x = 584,585.10 × 189,940.95
  4. Step 4: Simplify right side
    389,723.40x = 111,036,649,249.85
  5. Step 5: Solve for x
    x = 111,036,649,249.85/389,723.40
  6. Step 6: Final answer
    x = 284,911.43

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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.