Home / 1,278,511.79-1,765,009.55-933,960.88

Finding the Fourth Proportional to 1,278,511.79, 1,765,009.55 and 933,960.88

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Solution

The fourth proportional to 1,278,511.79, 1,765,009.55 and 933,960.88 is: 1,289,350.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,511.79 : 1,765,009.55 = 933,960.88 : x
  2. Step 2: Convert to fraction form
    1,278,511.79/1,765,009.55 = 933,960.88/x
  3. Step 3: Cross multiply
    1,278,511.79x = 1,765,009.55 × 933,960.88
  4. Step 4: Simplify right side
    1,278,511.79x = 1,648,449,859,031.55
  5. Step 5: Solve for x
    x = 1,648,449,859,031.55/1,278,511.79
  6. Step 6: Final answer
    x = 1,289,350.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.