Home / 816,745.48-1,225,119.66-318,109.48

Finding the Fourth Proportional to 816,745.48, 1,225,119.66 and 318,109.48

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Solution

The fourth proportional to 816,745.48, 1,225,119.66 and 318,109.48 is: 477,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,745.48 : 1,225,119.66 = 318,109.48 : x
  2. Step 2: Convert to fraction form
    816,745.48/1,225,119.66 = 318,109.48/x
  3. Step 3: Cross multiply
    816,745.48x = 1,225,119.66 × 318,109.48
  4. Step 4: Simplify right side
    816,745.48x = 389,722,177,980.38
  5. Step 5: Solve for x
    x = 389,722,177,980.38/816,745.48
  6. Step 6: Final answer
    x = 477,164.78

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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.