Home / 2,215,322.70-3,057,069.74-1,221,929.86

Finding the Fourth Proportional to 2,215,322.70, 3,057,069.74 and 1,221,929.86

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Solution

The fourth proportional to 2,215,322.70, 3,057,069.74 and 1,221,929.86 is: 1,686,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215,322.70 : 3,057,069.74 = 1,221,929.86 : x
  2. Step 2: Convert to fraction form
    2,215,322.70/3,057,069.74 = 1,221,929.86/x
  3. Step 3: Cross multiply
    2,215,322.70x = 3,057,069.74 × 1,221,929.86
  4. Step 4: Simplify right side
    2,215,322.70x = 3,735,524,793,298.79
  5. Step 5: Solve for x
    x = 3,735,524,793,298.79/2,215,322.70
  6. Step 6: Final answer
    x = 1,686,221.52

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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.