Home / 3,118,405.78-4,303,399.92-1,687,621.78

Finding the Fourth Proportional to 3,118,405.78, 4,303,399.92 and 1,687,621.78

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Solution

The fourth proportional to 3,118,405.78, 4,303,399.92 and 1,687,621.78 is: 2,328,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,405.78 : 4,303,399.92 = 1,687,621.78 : x
  2. Step 2: Convert to fraction form
    3,118,405.78/4,303,399.92 = 1,687,621.78/x
  3. Step 3: Cross multiply
    3,118,405.78x = 4,303,399.92 × 1,687,621.78
  4. Step 4: Simplify right side
    3,118,405.78x = 7,262,511,433,042.26
  5. Step 5: Solve for x
    x = 7,262,511,433,042.26/3,118,405.78
  6. Step 6: Final answer
    x = 2,328,918.03

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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.