Home / 2,188,267.92-3,019,961.88-1,221,586.92

Finding the Fourth Proportional to 2,188,267.92, 3,019,961.88 and 1,221,586.92

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Solution

The fourth proportional to 2,188,267.92, 3,019,961.88 and 1,221,586.92 is: 1,685,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,267.92 : 3,019,961.88 = 1,221,586.92 : x
  2. Step 2: Convert to fraction form
    2,188,267.92/3,019,961.88 = 1,221,586.92/x
  3. Step 3: Cross multiply
    2,188,267.92x = 3,019,961.88 × 1,221,586.92
  4. Step 4: Simplify right side
    2,188,267.92x = 3,689,145,931,506.61
  5. Step 5: Solve for x
    x = 3,689,145,931,506.61/2,188,267.92
  6. Step 6: Final answer
    x = 1,685,874.89

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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.