Home / 487,829.21-731,743.82-321,578.33

Finding the Fourth Proportional to 487,829.21, 731,743.82 and 321,578.33

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Solution

The fourth proportional to 487,829.21, 731,743.82 and 321,578.33 is: 482,367.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,829.21 : 731,743.82 = 321,578.33 : x
  2. Step 2: Convert to fraction form
    487,829.21/731,743.82 = 321,578.33/x
  3. Step 3: Cross multiply
    487,829.21x = 731,743.82 × 321,578.33
  4. Step 4: Simplify right side
    487,829.21x = 235,312,955,623.42
  5. Step 5: Solve for x
    x = 235,312,955,623.42/487,829.21
  6. Step 6: Final answer
    x = 482,367.50

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Similar ratio
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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.