Home / 825,291.45-1,238,038.70-319,860.81

Finding the Fourth Proportional to 825,291.45, 1,238,038.70 and 319,860.81

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Solution

The fourth proportional to 825,291.45, 1,238,038.70 and 319,860.81 is: 479,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,291.45 : 1,238,038.70 = 319,860.81 : x
  2. Step 2: Convert to fraction form
    825,291.45/1,238,038.70 = 319,860.81/x
  3. Step 3: Cross multiply
    825,291.45x = 1,238,038.70 × 319,860.81
  4. Step 4: Simplify right side
    825,291.45x = 396,000,059,794.04
  5. Step 5: Solve for x
    x = 396,000,059,794.04/825,291.45
  6. Step 6: Final answer
    x = 479,830.56

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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.