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Finding the Fourth Proportional to 445,521.40, 667,115.70 and 326,548.60

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Solution

The fourth proportional to 445,521.40, 667,115.70 and 326,548.60 is: 488,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,521.40 : 667,115.70 = 326,548.60 : x
  2. Step 2: Convert to fraction form
    445,521.40/667,115.70 = 326,548.60/x
  3. Step 3: Cross multiply
    445,521.40x = 667,115.70 × 326,548.60
  4. Step 4: Simplify right side
    445,521.40x = 217,845,697,873.02
  5. Step 5: Solve for x
    x = 217,845,697,873.02/445,521.40
  6. Step 6: Final answer
    x = 488,967.98

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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.