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Finding the Fourth Proportional to 396,002.80, 555,803.60 and 396,002.80

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Solution

The fourth proportional to 396,002.80, 555,803.60 and 396,002.80 is: 555,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,002.80 : 555,803.60 = 396,002.80 : x
  2. Step 2: Convert to fraction form
    396,002.80/555,803.60 = 396,002.80/x
  3. Step 3: Cross multiply
    396,002.80x = 555,803.60 × 396,002.80
  4. Step 4: Simplify right side
    396,002.80x = 220,099,781,850.08
  5. Step 5: Solve for x
    x = 220,099,781,850.08/396,002.80
  6. Step 6: Final answer
    x = 555,803.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.