Home / 825,342.20-1,238,114.82-319,911.56

Finding the Fourth Proportional to 825,342.20, 1,238,114.82 and 319,911.56

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Solution

The fourth proportional to 825,342.20, 1,238,114.82 and 319,911.56 is: 479,906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,342.20 : 1,238,114.82 = 319,911.56 : x
  2. Step 2: Convert to fraction form
    825,342.20/1,238,114.82 = 319,911.56/x
  3. Step 3: Cross multiply
    825,342.20x = 1,238,114.82 × 319,911.56
  4. Step 4: Simplify right side
    825,342.20x = 396,087,243,525.32
  5. Step 5: Solve for x
    x = 396,087,243,525.32/825,342.20
  6. Step 6: Final answer
    x = 479,906.69

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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.