Home / 863,400.80-1,295,101.20-664,104.80

Finding the Fourth Proportional to 863,400.80, 1,295,101.20 and 664,104.80

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Solution

The fourth proportional to 863,400.80, 1,295,101.20 and 664,104.80 is: 996,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,400.80 : 1,295,101.20 = 664,104.80 : x
  2. Step 2: Convert to fraction form
    863,400.80/1,295,101.20 = 664,104.80/x
  3. Step 3: Cross multiply
    863,400.80x = 1,295,101.20 × 664,104.80
  4. Step 4: Simplify right side
    863,400.80x = 860,082,923,405.76
  5. Step 5: Solve for x
    x = 860,082,923,405.76/863,400.80
  6. Step 6: Final answer
    x = 996,157.20

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1.5x scale

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.