Home / 677,942.62-1,017,199.07-421,989.16

Finding the Fourth Proportional to 677,942.62, 1,017,199.07 and 421,989.16

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Solution

The fourth proportional to 677,942.62, 1,017,199.07 and 421,989.16 is: 633,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,942.62 : 1,017,199.07 = 421,989.16 : x
  2. Step 2: Convert to fraction form
    677,942.62/1,017,199.07 = 421,989.16/x
  3. Step 3: Cross multiply
    677,942.62x = 1,017,199.07 × 421,989.16
  4. Step 4: Simplify right side
    677,942.62x = 429,246,981,102.08
  5. Step 5: Solve for x
    x = 429,246,981,102.08/677,942.62
  6. Step 6: Final answer
    x = 633,161.23

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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.