Home / 621,268.76-930,685.25-321,945.69

Finding the Fourth Proportional to 621,268.76, 930,685.25 and 321,945.69

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Solution

The fourth proportional to 621,268.76, 930,685.25 and 321,945.69 is: 482,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,268.76 : 930,685.25 = 321,945.69 : x
  2. Step 2: Convert to fraction form
    621,268.76/930,685.25 = 321,945.69/x
  3. Step 3: Cross multiply
    621,268.76x = 930,685.25 × 321,945.69
  4. Step 4: Simplify right side
    621,268.76x = 299,630,109,279.01
  5. Step 5: Solve for x
    x = 299,630,109,279.01/621,268.76
  6. Step 6: Final answer
    x = 482,287.42

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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.