Home / 1,388,861.69-2,083,297.79-489,815.15

Finding the Fourth Proportional to 1,388,861.69, 2,083,297.79 and 489,815.15

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Solution

The fourth proportional to 1,388,861.69, 2,083,297.79 and 489,815.15 is: 734,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,861.69 : 2,083,297.79 = 489,815.15 : x
  2. Step 2: Convert to fraction form
    1,388,861.69/2,083,297.79 = 489,815.15/x
  3. Step 3: Cross multiply
    1,388,861.69x = 2,083,297.79 × 489,815.15
  4. Step 4: Simplify right side
    1,388,861.69x = 1,020,430,810,311.57
  5. Step 5: Solve for x
    x = 1,020,430,810,311.57/1,388,861.69
  6. Step 6: Final answer
    x = 734,724.57

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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.