Home / 1,221,374.53-1,831,176.05-821,022.31

Finding the Fourth Proportional to 1,221,374.53, 1,831,176.05 and 821,022.31

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Solution

The fourth proportional to 1,221,374.53, 1,831,176.05 and 821,022.31 is: 1,230,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,374.53 : 1,831,176.05 = 821,022.31 : x
  2. Step 2: Convert to fraction form
    1,221,374.53/1,831,176.05 = 821,022.31/x
  3. Step 3: Cross multiply
    1,221,374.53x = 1,831,176.05 × 821,022.31
  4. Step 4: Simplify right side
    1,221,374.53x = 1,503,436,381,431.80
  5. Step 5: Solve for x
    x = 1,503,436,381,431.80/1,221,374.53
  6. Step 6: Final answer
    x = 1,230,938.05

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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.