Home / 12,990,414.80-19,485,622.20-3,405,774.80

Finding the Fourth Proportional to 12,990,414.80, 19,485,622.20 and 3,405,774.80

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Solution

The fourth proportional to 12,990,414.80, 19,485,622.20 and 3,405,774.80 is: 5,108,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990,414.80 : 19,485,622.20 = 3,405,774.80 : x
  2. Step 2: Convert to fraction form
    12,990,414.80/19,485,622.20 = 3,405,774.80/x
  3. Step 3: Cross multiply
    12,990,414.80x = 19,485,622.20 × 3,405,774.80
  4. Step 4: Simplify right side
    12,990,414.80x = 66,363,641,051,080.55
  5. Step 5: Solve for x
    x = 66,363,641,051,080.55/12,990,414.80
  6. Step 6: Final answer
    x = 5,108,662.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.