Home / 825,394.86-1,238,369.22-319,972.32

Finding the Fourth Proportional to 825,394.86, 1,238,369.22 and 319,972.32

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Solution

The fourth proportional to 825,394.86, 1,238,369.22 and 319,972.32 is: 480,065.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,394.86 : 1,238,369.22 = 319,972.32 : x
  2. Step 2: Convert to fraction form
    825,394.86/1,238,369.22 = 319,972.32/x
  3. Step 3: Cross multiply
    825,394.86x = 1,238,369.22 × 319,972.32
  4. Step 4: Simplify right side
    825,394.86x = 396,243,872,339.99
  5. Step 5: Solve for x
    x = 396,243,872,339.99/825,394.86
  6. Step 6: Final answer
    x = 480,065.83

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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.