Home / 287,893,616.76-396,879,974.10-205,243,912.44

Finding the Fourth Proportional to 287,893,616.76, 396,879,974.10 and 205,243,912.44

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Solution

The fourth proportional to 287,893,616.76, 396,879,974.10 and 205,243,912.44 is: 282,942,010.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,893,616.76 : 396,879,974.10 = 205,243,912.44 : x
  2. Step 2: Convert to fraction form
    287,893,616.76/396,879,974.10 = 205,243,912.44/x
  3. Step 3: Cross multiply
    287,893,616.76x = 396,879,974.10 × 205,243,912.44
  4. Step 4: Simplify right side
    287,893,616.76x = 81,457,198,653,369,872
  5. Step 5: Solve for x
    x = 81,457,198,653,369,872/287,893,616.76
  6. Step 6: Final answer
    x = 282,942,010.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.