Home / 825,621.51-1,139,369.90-481,447.85

Finding the Fourth Proportional to 825,621.51, 1,139,369.90 and 481,447.85

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Solution

The fourth proportional to 825,621.51, 1,139,369.90 and 481,447.85 is: 664,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,621.51 : 1,139,369.90 = 481,447.85 : x
  2. Step 2: Convert to fraction form
    825,621.51/1,139,369.90 = 481,447.85/x
  3. Step 3: Cross multiply
    825,621.51x = 1,139,369.90 × 481,447.85
  4. Step 4: Simplify right side
    825,621.51x = 548,547,187,014.58
  5. Step 5: Solve for x
    x = 548,547,187,014.58/825,621.51
  6. Step 6: Final answer
    x = 664,405.16

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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.