Home / 678,804,623.40-1,017,790,230.06-263,796,873.72

Finding the Fourth Proportional to 678,804,623.40, 1,017,790,230.06 and 263,796,873.72

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Solution

The fourth proportional to 678,804,623.40, 1,017,790,230.06 and 263,796,873.72 is: 395,533,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,804,623.40 : 1,017,790,230.06 = 263,796,873.72 : x
  2. Step 2: Convert to fraction form
    678,804,623.40/1,017,790,230.06 = 263,796,873.72/x
  3. Step 3: Cross multiply
    678,804,623.40x = 1,017,790,230.06 × 263,796,873.72
  4. Step 4: Simplify right side
    678,804,623.40x = 268,489,880,792,587,552
  5. Step 5: Solve for x
    x = 268,489,880,792,587,552/678,804,623.40
  6. Step 6: Final answer
    x = 395,533,370.78

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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.