Home / 398,405,384.80-597,608,077.20-281,504,111.20

Finding the Fourth Proportional to 398,405,384.80, 597,608,077.20 and 281,504,111.20

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Solution

The fourth proportional to 398,405,384.80, 597,608,077.20 and 281,504,111.20 is: 422,256,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,405,384.80 : 597,608,077.20 = 281,504,111.20 : x
  2. Step 2: Convert to fraction form
    398,405,384.80/597,608,077.20 = 281,504,111.20/x
  3. Step 3: Cross multiply
    398,405,384.80x = 597,608,077.20 × 281,504,111.20
  4. Step 4: Simplify right side
    398,405,384.80x = 168,229,130,618,126,976
  5. Step 5: Solve for x
    x = 168,229,130,618,126,976/398,405,384.80
  6. Step 6: Final answer
    x = 422,256,166.80

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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.