Home / 485,065.56-669,667.94-321,943.28

Finding the Fourth Proportional to 485,065.56, 669,667.94 and 321,943.28

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Solution

The fourth proportional to 485,065.56, 669,667.94 and 321,943.28 is: 444,465.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,065.56 : 669,667.94 = 321,943.28 : x
  2. Step 2: Convert to fraction form
    485,065.56/669,667.94 = 321,943.28/x
  3. Step 3: Cross multiply
    485,065.56x = 669,667.94 × 321,943.28
  4. Step 4: Simplify right side
    485,065.56x = 215,595,093,114.44
  5. Step 5: Solve for x
    x = 215,595,093,114.44/485,065.56
  6. Step 6: Final answer
    x = 444,465.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.