Home / 2,188,181.67-3,019,842.86-1,221,500.67

Finding the Fourth Proportional to 2,188,181.67, 3,019,842.86 and 1,221,500.67

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Solution

The fourth proportional to 2,188,181.67, 3,019,842.86 and 1,221,500.67 is: 1,685,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,181.67 : 3,019,842.86 = 1,221,500.67 : x
  2. Step 2: Convert to fraction form
    2,188,181.67/3,019,842.86 = 1,221,500.67/x
  3. Step 3: Cross multiply
    2,188,181.67x = 3,019,842.86 × 1,221,500.67
  4. Step 4: Simplify right side
    2,188,181.67x = 3,688,740,070,677.21
  5. Step 5: Solve for x
    x = 3,688,740,070,677.21/2,188,181.67
  6. Step 6: Final answer
    x = 1,685,755.86

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1.5x scale

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.