Home / 2,188,167.42-3,019,823.19-1,221,486.42

Finding the Fourth Proportional to 2,188,167.42, 3,019,823.19 and 1,221,486.42

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Solution

The fourth proportional to 2,188,167.42, 3,019,823.19 and 1,221,486.42 is: 1,685,736.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,167.42 : 3,019,823.19 = 1,221,486.42 : x
  2. Step 2: Convert to fraction form
    2,188,167.42/3,019,823.19 = 1,221,486.42/x
  3. Step 3: Cross multiply
    2,188,167.42x = 3,019,823.19 × 1,221,486.42
  4. Step 4: Simplify right side
    2,188,167.42x = 3,688,673,017,386.08
  5. Step 5: Solve for x
    x = 3,688,673,017,386.08/2,188,167.42
  6. Step 6: Final answer
    x = 1,685,736.19

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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.