Home / 825,740.47-1,237,853.45-320,171.68

Finding the Fourth Proportional to 825,740.47, 1,237,853.45 and 320,171.68

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Solution

The fourth proportional to 825,740.47, 1,237,853.45 and 320,171.68 is: 479,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,740.47 : 1,237,853.45 = 320,171.68 : x
  2. Step 2: Convert to fraction form
    825,740.47/1,237,853.45 = 320,171.68/x
  3. Step 3: Cross multiply
    825,740.47x = 1,237,853.45 × 320,171.68
  4. Step 4: Simplify right side
    825,740.47x = 396,325,618,680.30
  5. Step 5: Solve for x
    x = 396,325,618,680.30/825,740.47
  6. Step 6: Final answer
    x = 479,963.90

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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.