Home / 1,289,621.48-1,778,241.78-881,790.44

Finding the Fourth Proportional to 1,289,621.48, 1,778,241.78 and 881,790.44

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Solution

The fourth proportional to 1,289,621.48, 1,778,241.78 and 881,790.44 is: 1,215,889.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,621.48 : 1,778,241.78 = 881,790.44 : x
  2. Step 2: Convert to fraction form
    1,289,621.48/1,778,241.78 = 881,790.44/x
  3. Step 3: Cross multiply
    1,289,621.48x = 1,778,241.78 × 881,790.44
  4. Step 4: Simplify right side
    1,289,621.48x = 1,568,036,601,612.58
  5. Step 5: Solve for x
    x = 1,568,036,601,612.58/1,289,621.48
  6. Step 6: Final answer
    x = 1,215,889.02

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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.