Home / 1,278,563.80-1,916,517.30-520,079.80

Finding the Fourth Proportional to 1,278,563.80, 1,916,517.30 and 520,079.80

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Solution

The fourth proportional to 1,278,563.80, 1,916,517.30 and 520,079.80 is: 779,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,563.80 : 1,916,517.30 = 520,079.80 : x
  2. Step 2: Convert to fraction form
    1,278,563.80/1,916,517.30 = 520,079.80/x
  3. Step 3: Cross multiply
    1,278,563.80x = 1,916,517.30 × 520,079.80
  4. Step 4: Simplify right side
    1,278,563.80x = 996,741,934,080.54
  5. Step 5: Solve for x
    x = 996,741,934,080.54/1,278,563.80
  6. Step 6: Final answer
    x = 779,579.35

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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.