Home / 809,705.20-1,214,557.80-511,106.80

Finding the Fourth Proportional to 809,705.20, 1,214,557.80 and 511,106.80

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Solution

The fourth proportional to 809,705.20, 1,214,557.80 and 511,106.80 is: 766,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,705.20 : 1,214,557.80 = 511,106.80 : x
  2. Step 2: Convert to fraction form
    809,705.20/1,214,557.80 = 511,106.80/x
  3. Step 3: Cross multiply
    809,705.20x = 1,214,557.80 × 511,106.80
  4. Step 4: Simplify right side
    809,705.20x = 620,768,750,573.04
  5. Step 5: Solve for x
    x = 620,768,750,573.04/809,705.20
  6. Step 6: Final answer
    x = 766,660.20

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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.