Home / 1,211,311.41-1,671,684.37-667,447.11

Finding the Fourth Proportional to 1,211,311.41, 1,671,684.37 and 667,447.11

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Solution

The fourth proportional to 1,211,311.41, 1,671,684.37 and 667,447.11 is: 921,118.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,311.41 : 1,671,684.37 = 667,447.11 : x
  2. Step 2: Convert to fraction form
    1,211,311.41/1,671,684.37 = 667,447.11/x
  3. Step 3: Cross multiply
    1,211,311.41x = 1,671,684.37 × 667,447.11
  4. Step 4: Simplify right side
    1,211,311.41x = 1,115,760,903,683.10
  5. Step 5: Solve for x
    x = 1,115,760,903,683.10/1,211,311.41
  6. Step 6: Final answer
    x = 921,118.13

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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.