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Finding the Fourth Proportional to 978,093.76, 1,467,145.70 and 445,242.14

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Solution

The fourth proportional to 978,093.76, 1,467,145.70 and 445,242.14 is: 667,865.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,093.76 : 1,467,145.70 = 445,242.14 : x
  2. Step 2: Convert to fraction form
    978,093.76/1,467,145.70 = 445,242.14/x
  3. Step 3: Cross multiply
    978,093.76x = 1,467,145.70 × 445,242.14
  4. Step 4: Simplify right side
    978,093.76x = 653,235,091,159.80
  5. Step 5: Solve for x
    x = 653,235,091,159.80/978,093.76
  6. Step 6: Final answer
    x = 667,865.51

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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.