Home / 821,113.58-1,231,655.78-260,133.50

Finding the Fourth Proportional to 821,113.58, 1,231,655.78 and 260,133.50

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Solution

The fourth proportional to 821,113.58, 1,231,655.78 and 260,133.50 is: 390,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,113.58 : 1,231,655.78 = 260,133.50 : x
  2. Step 2: Convert to fraction form
    821,113.58/1,231,655.78 = 260,133.50/x
  3. Step 3: Cross multiply
    821,113.58x = 1,231,655.78 × 260,133.50
  4. Step 4: Simplify right side
    821,113.58x = 320,394,928,846.63
  5. Step 5: Solve for x
    x = 320,394,928,846.63/821,113.58
  6. Step 6: Final answer
    x = 390,195.63

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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.