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Finding the Fourth Proportional to 978,440.40, 1,467,660.64 and 978,440.40

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Solution

The fourth proportional to 978,440.40, 1,467,660.64 and 978,440.40 is: 1,467,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,440.40 : 1,467,660.64 = 978,440.40 : x
  2. Step 2: Convert to fraction form
    978,440.40/1,467,660.64 = 978,440.40/x
  3. Step 3: Cross multiply
    978,440.40x = 1,467,660.64 × 978,440.40
  4. Step 4: Simplify right side
    978,440.40x = 1,436,018,463,665.86
  5. Step 5: Solve for x
    x = 1,436,018,463,665.86/978,440.40
  6. Step 6: Final answer
    x = 1,467,660.64

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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.