Home / 1,245,623.23-1,718,601.78-810,680.87

Finding the Fourth Proportional to 1,245,623.23, 1,718,601.78 and 810,680.87

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Solution

The fourth proportional to 1,245,623.23, 1,718,601.78 and 810,680.87 is: 1,118,506.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,623.23 : 1,718,601.78 = 810,680.87 : x
  2. Step 2: Convert to fraction form
    1,245,623.23/1,718,601.78 = 810,680.87/x
  3. Step 3: Cross multiply
    1,245,623.23x = 1,718,601.78 × 810,680.87
  4. Step 4: Simplify right side
    1,245,623.23x = 1,393,237,593,530.51
  5. Step 5: Solve for x
    x = 1,393,237,593,530.51/1,245,623.23
  6. Step 6: Final answer
    x = 1,118,506.43

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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.