Home / 826,638.80-1,239,958.20-818,765.60

Finding the Fourth Proportional to 826,638.80, 1,239,958.20 and 818,765.60

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Solution

The fourth proportional to 826,638.80, 1,239,958.20 and 818,765.60 is: 1,228,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,638.80 : 1,239,958.20 = 818,765.60 : x
  2. Step 2: Convert to fraction form
    826,638.80/1,239,958.20 = 818,765.60/x
  3. Step 3: Cross multiply
    826,638.80x = 1,239,958.20 × 818,765.60
  4. Step 4: Simplify right side
    826,638.80x = 1,015,235,119,597.92
  5. Step 5: Solve for x
    x = 1,015,235,119,597.92/826,638.80
  6. Step 6: Final answer
    x = 1,228,148.40

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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.