Home / 1,208,100.72-1,811,023.90-408,826.20

Finding the Fourth Proportional to 1,208,100.72, 1,811,023.90 and 408,826.20

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Solution

The fourth proportional to 1,208,100.72, 1,811,023.90 and 408,826.20 is: 612,857.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,100.72 : 1,811,023.90 = 408,826.20 : x
  2. Step 2: Convert to fraction form
    1,208,100.72/1,811,023.90 = 408,826.20/x
  3. Step 3: Cross multiply
    1,208,100.72x = 1,811,023.90 × 408,826.20
  4. Step 4: Simplify right side
    1,208,100.72x = 740,394,019,146.18
  5. Step 5: Solve for x
    x = 740,394,019,146.18/1,208,100.72
  6. Step 6: Final answer
    x = 612,857.86

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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.