Home / 1,126,680,990.82-1,688,828,696.44-378,984,969.34

Finding the Fourth Proportional to 1,126,680,990.82, 1,688,828,696.44 and 378,984,969.34

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Solution

The fourth proportional to 1,126,680,990.82, 1,688,828,696.44 and 378,984,969.34 is: 568,076,231.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,680,990.82 : 1,688,828,696.44 = 378,984,969.34 : x
  2. Step 2: Convert to fraction form
    1,126,680,990.82/1,688,828,696.44 = 378,984,969.34/x
  3. Step 3: Cross multiply
    1,126,680,990.82x = 1,688,828,696.44 × 378,984,969.34
  4. Step 4: Simplify right side
    1,126,680,990.82x = 640,040,691,740,825,600
  5. Step 5: Solve for x
    x = 640,040,691,740,825,600/1,126,680,990.82
  6. Step 6: Final answer
    x = 568,076,231.83

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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.