Home / 1,221,374.78-1,831,176.43-821,022.56

Finding the Fourth Proportional to 1,221,374.78, 1,831,176.43 and 821,022.56

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Solution

The fourth proportional to 1,221,374.78, 1,831,176.43 and 821,022.56 is: 1,230,938.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,374.78 : 1,831,176.43 = 821,022.56 : x
  2. Step 2: Convert to fraction form
    1,221,374.78/1,831,176.43 = 821,022.56/x
  3. Step 3: Cross multiply
    1,221,374.78x = 1,831,176.43 × 821,022.56
  4. Step 4: Simplify right side
    1,221,374.78x = 1,503,437,147,109.27
  5. Step 5: Solve for x
    x = 1,503,437,147,109.27/1,221,374.78
  6. Step 6: Final answer
    x = 1,230,938.43

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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.