Home / 445,072.20-667,608.30-326,099.40

Finding the Fourth Proportional to 445,072.20, 667,608.30 and 326,099.40

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Solution

The fourth proportional to 445,072.20, 667,608.30 and 326,099.40 is: 489,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,072.20 : 667,608.30 = 326,099.40 : x
  2. Step 2: Convert to fraction form
    445,072.20/667,608.30 = 326,099.40/x
  3. Step 3: Cross multiply
    445,072.20x = 667,608.30 × 326,099.40
  4. Step 4: Simplify right side
    445,072.20x = 217,706,666,065.02
  5. Step 5: Solve for x
    x = 217,706,666,065.02/445,072.20
  6. Step 6: Final answer
    x = 489,149.10

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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.