Home / 1,278,449.80-1,916,346.30-519,965.80

Finding the Fourth Proportional to 1,278,449.80, 1,916,346.30 and 519,965.80

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Solution

The fourth proportional to 1,278,449.80, 1,916,346.30 and 519,965.80 is: 779,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,449.80 : 1,916,346.30 = 519,965.80 : x
  2. Step 2: Convert to fraction form
    1,278,449.80/1,916,346.30 = 519,965.80/x
  3. Step 3: Cross multiply
    1,278,449.80x = 1,916,346.30 × 519,965.80
  4. Step 4: Simplify right side
    1,278,449.80x = 996,434,536,956.54
  5. Step 5: Solve for x
    x = 996,434,536,956.54/1,278,449.80
  6. Step 6: Final answer
    x = 779,408.42

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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.