Home / 1,221,091.86-1,831,916.79-422,372.73

Finding the Fourth Proportional to 1,221,091.86, 1,831,916.79 and 422,372.73

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Solution

The fourth proportional to 1,221,091.86, 1,831,916.79 and 422,372.73 is: 633,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,091.86 : 1,831,916.79 = 422,372.73 : x
  2. Step 2: Convert to fraction form
    1,221,091.86/1,831,916.79 = 422,372.73/x
  3. Step 3: Cross multiply
    1,221,091.86x = 1,831,916.79 × 422,372.73
  4. Step 4: Simplify right side
    1,221,091.86x = 773,751,695,725.14
  5. Step 5: Solve for x
    x = 773,751,695,725.14/1,221,091.86
  6. Step 6: Final answer
    x = 633,655.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.