Home / 853,735.74-1,281,264.60-321,740.70

Finding the Fourth Proportional to 853,735.74, 1,281,264.60 and 321,740.70

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Solution

The fourth proportional to 853,735.74, 1,281,264.60 and 321,740.70 is: 482,860.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,735.74 : 1,281,264.60 = 321,740.70 : x
  2. Step 2: Convert to fraction form
    853,735.74/1,281,264.60 = 321,740.70/x
  3. Step 3: Cross multiply
    853,735.74x = 1,281,264.60 × 321,740.70
  4. Step 4: Simplify right side
    853,735.74x = 412,234,969,289.22
  5. Step 5: Solve for x
    x = 412,234,969,289.22/853,735.74
  6. Step 6: Final answer
    x = 482,860.15

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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.