Home / 678,804,629.90-1,017,790,239.81-263,796,880.22

Finding the Fourth Proportional to 678,804,629.90, 1,017,790,239.81 and 263,796,880.22

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Solution

The fourth proportional to 678,804,629.90, 1,017,790,239.81 and 263,796,880.22 is: 395,533,380.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,804,629.90 : 1,017,790,239.81 = 263,796,880.22 : x
  2. Step 2: Convert to fraction form
    678,804,629.90/1,017,790,239.81 = 263,796,880.22/x
  3. Step 3: Cross multiply
    678,804,629.90x = 1,017,790,239.81 × 263,796,880.22
  4. Step 4: Simplify right side
    678,804,629.90x = 268,489,889,980,243,616
  5. Step 5: Solve for x
    x = 268,489,889,980,243,616/678,804,629.90
  6. Step 6: Final answer
    x = 395,533,380.52

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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.