Home / 445,021.20-667,531.80-326,048.40

Finding the Fourth Proportional to 445,021.20, 667,531.80 and 326,048.40

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Solution

The fourth proportional to 445,021.20, 667,531.80 and 326,048.40 is: 489,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,021.20 : 667,531.80 = 326,048.40 : x
  2. Step 2: Convert to fraction form
    445,021.20/667,531.80 = 326,048.40/x
  3. Step 3: Cross multiply
    445,021.20x = 667,531.80 × 326,048.40
  4. Step 4: Simplify right side
    445,021.20x = 217,647,675,339.12
  5. Step 5: Solve for x
    x = 217,647,675,339.12/445,021.20
  6. Step 6: Final answer
    x = 489,072.60

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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.