Home / 3,105,315.23-4,285,288.78-1,728,656.44

Finding the Fourth Proportional to 3,105,315.23, 4,285,288.78 and 1,728,656.44

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Solution

The fourth proportional to 3,105,315.23, 4,285,288.78 and 1,728,656.44 is: 2,385,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105,315.23 : 4,285,288.78 = 1,728,656.44 : x
  2. Step 2: Convert to fraction form
    3,105,315.23/4,285,288.78 = 1,728,656.44/x
  3. Step 3: Cross multiply
    3,105,315.23x = 4,285,288.78 × 1,728,656.44
  4. Step 4: Simplify right side
    3,105,315.23x = 7,407,792,046,806.74
  5. Step 5: Solve for x
    x = 7,407,792,046,806.74/3,105,315.23
  6. Step 6: Final answer
    x = 2,385,520.15

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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.