Home / 2,135,786.76-2,947,237.65-1,218,054.72

Finding the Fourth Proportional to 2,135,786.76, 2,947,237.65 and 1,218,054.72

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Solution

The fourth proportional to 2,135,786.76, 2,947,237.65 and 1,218,054.72 is: 1,680,831.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135,786.76 : 2,947,237.65 = 1,218,054.72 : x
  2. Step 2: Convert to fraction form
    2,135,786.76/2,947,237.65 = 1,218,054.72/x
  3. Step 3: Cross multiply
    2,135,786.76x = 2,947,237.65 × 1,218,054.72
  4. Step 4: Simplify right side
    2,135,786.76x = 3,589,896,730,544.21
  5. Step 5: Solve for x
    x = 3,589,896,730,544.21/2,135,786.76
  6. Step 6: Final answer
    x = 1,680,831.06

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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.