Home / 2,105,453.20-3,157,850.40-685,499.72

Finding the Fourth Proportional to 2,105,453.20, 3,157,850.40 and 685,499.72

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Solution

The fourth proportional to 2,105,453.20, 3,157,850.40 and 685,499.72 is: 1,028,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105,453.20 : 3,157,850.40 = 685,499.72 : x
  2. Step 2: Convert to fraction form
    2,105,453.20/3,157,850.40 = 685,499.72/x
  3. Step 3: Cross multiply
    2,105,453.20x = 3,157,850.40 × 685,499.72
  4. Step 4: Simplify right side
    2,105,453.20x = 2,164,705,565,001.89
  5. Step 5: Solve for x
    x = 2,164,705,565,001.89/2,105,453.20
  6. Step 6: Final answer
    x = 1,028,142.33

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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.