Home / 1,212,081.28-1,672,683.80-668,236.96

Finding the Fourth Proportional to 1,212,081.28, 1,672,683.80 and 668,236.96

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Solution

The fourth proportional to 1,212,081.28, 1,672,683.80 and 668,236.96 is: 922,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,081.28 : 1,672,683.80 = 668,236.96 : x
  2. Step 2: Convert to fraction form
    1,212,081.28/1,672,683.80 = 668,236.96/x
  3. Step 3: Cross multiply
    1,212,081.28x = 1,672,683.80 × 668,236.96
  4. Step 4: Simplify right side
    1,212,081.28x = 1,117,749,137,553.25
  5. Step 5: Solve for x
    x = 1,117,749,137,553.25/1,212,081.28
  6. Step 6: Final answer
    x = 922,173.42

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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.