Home / 1,291,976.76-1,782,910.50-719,016.78

Finding the Fourth Proportional to 1,291,976.76, 1,782,910.50 and 719,016.78

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Solution

The fourth proportional to 1,291,976.76, 1,782,910.50 and 719,016.78 is: 992,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,976.76 : 1,782,910.50 = 719,016.78 : x
  2. Step 2: Convert to fraction form
    1,291,976.76/1,782,910.50 = 719,016.78/x
  3. Step 3: Cross multiply
    1,291,976.76x = 1,782,910.50 × 719,016.78
  4. Step 4: Simplify right side
    1,291,976.76x = 1,281,942,566,738.19
  5. Step 5: Solve for x
    x = 1,281,942,566,738.19/1,291,976.76
  6. Step 6: Final answer
    x = 992,233.46

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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.