Home / 398,705,976.83-598,056,455.61-214,560,194.10

Finding the Fourth Proportional to 398,705,976.83, 598,056,455.61 and 214,560,194.10

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Solution

The fourth proportional to 398,705,976.83, 598,056,455.61 and 214,560,194.10 is: 321,838,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,705,976.83 : 598,056,455.61 = 214,560,194.10 : x
  2. Step 2: Convert to fraction form
    398,705,976.83/598,056,455.61 = 214,560,194.10/x
  3. Step 3: Cross multiply
    398,705,976.83x = 598,056,455.61 × 214,560,194.10
  4. Step 4: Simplify right side
    398,705,976.83x = 128,319,109,198,439,632
  5. Step 5: Solve for x
    x = 128,319,109,198,439,632/398,705,976.83
  6. Step 6: Final answer
    x = 321,838,940.62

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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.