Home / 407,828.80-611,743.20-281,857.60

Finding the Fourth Proportional to 407,828.80, 611,743.20 and 281,857.60

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Solution

The fourth proportional to 407,828.80, 611,743.20 and 281,857.60 is: 422,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,828.80 : 611,743.20 = 281,857.60 : x
  2. Step 2: Convert to fraction form
    407,828.80/611,743.20 = 281,857.60/x
  3. Step 3: Cross multiply
    407,828.80x = 611,743.20 × 281,857.60
  4. Step 4: Simplify right side
    407,828.80x = 172,424,470,168.32
  5. Step 5: Solve for x
    x = 172,424,470,168.32/407,828.80
  6. Step 6: Final answer
    x = 422,786.40

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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.