Home / 809,051.60-1,213,285.80-409,559.60

Finding the Fourth Proportional to 809,051.60, 1,213,285.80 and 409,559.60

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Solution

The fourth proportional to 809,051.60, 1,213,285.80 and 409,559.60 is: 614,191.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,051.60 : 1,213,285.80 = 409,559.60 : x
  2. Step 2: Convert to fraction form
    809,051.60/1,213,285.80 = 409,559.60/x
  3. Step 3: Cross multiply
    809,051.60x = 1,213,285.80 × 409,559.60
  4. Step 4: Simplify right side
    809,051.60x = 496,912,846,933.68
  5. Step 5: Solve for x
    x = 496,912,846,933.68/809,051.60
  6. Step 6: Final answer
    x = 614,191.79

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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.