Home / 1,214,621.80-1,821,584.40-361,657.78

Finding the Fourth Proportional to 1,214,621.80, 1,821,584.40 and 361,657.78

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Solution

The fourth proportional to 1,214,621.80, 1,821,584.40 and 361,657.78 is: 542,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,621.80 : 1,821,584.40 = 361,657.78 : x
  2. Step 2: Convert to fraction form
    1,214,621.80/1,821,584.40 = 361,657.78/x
  3. Step 3: Cross multiply
    1,214,621.80x = 1,821,584.40 × 361,657.78
  4. Step 4: Simplify right side
    1,214,621.80x = 658,790,170,186.63
  5. Step 5: Solve for x
    x = 658,790,170,186.63/1,214,621.80
  6. Step 6: Final answer
    x = 542,382.96

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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.