Home / 2,160,734.90-2,981,558.34-1,289,408.12

Finding the Fourth Proportional to 2,160,734.90, 2,981,558.34 and 1,289,408.12

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Solution

The fourth proportional to 2,160,734.90, 2,981,558.34 and 1,289,408.12 is: 1,779,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160,734.90 : 2,981,558.34 = 1,289,408.12 : x
  2. Step 2: Convert to fraction form
    2,160,734.90/2,981,558.34 = 1,289,408.12/x
  3. Step 3: Cross multiply
    2,160,734.90x = 2,981,558.34 × 1,289,408.12
  4. Step 4: Simplify right side
    2,160,734.90x = 3,844,445,518,941.93
  5. Step 5: Solve for x
    x = 3,844,445,518,941.93/2,160,734.90
  6. Step 6: Final answer
    x = 1,779,230.54

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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.