Home / 639,786.18-960,417.38-324,907.39

Finding the Fourth Proportional to 639,786.18, 960,417.38 and 324,907.39

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Solution

The fourth proportional to 639,786.18, 960,417.38 and 324,907.39 is: 487,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,786.18 : 960,417.38 = 324,907.39 : x
  2. Step 2: Convert to fraction form
    639,786.18/960,417.38 = 324,907.39/x
  3. Step 3: Cross multiply
    639,786.18x = 960,417.38 × 324,907.39
  4. Step 4: Simplify right side
    639,786.18x = 312,046,704,246.44
  5. Step 5: Solve for x
    x = 312,046,704,246.44/639,786.18
  6. Step 6: Final answer
    x = 487,735.92

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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.