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Finding the Fourth Proportional to 978,153.21, 1,467,235.04 and 445,301.73

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Solution

The fourth proportional to 978,153.21, 1,467,235.04 and 445,301.73 is: 667,954.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,153.21 : 1,467,235.04 = 445,301.73 : x
  2. Step 2: Convert to fraction form
    978,153.21/1,467,235.04 = 445,301.73/x
  3. Step 3: Cross multiply
    978,153.21x = 1,467,235.04 × 445,301.73
  4. Step 4: Simplify right side
    978,153.21x = 653,362,299,402.11
  5. Step 5: Solve for x
    x = 653,362,299,402.11/978,153.21
  6. Step 6: Final answer
    x = 667,954.97

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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.