Home / 678,021.71-1,016,999.55-251,640.54

Finding the Fourth Proportional to 678,021.71, 1,016,999.55 and 251,640.54

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Solution

The fourth proportional to 678,021.71, 1,016,999.55 and 251,640.54 is: 377,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,021.71 : 1,016,999.55 = 251,640.54 : x
  2. Step 2: Convert to fraction form
    678,021.71/1,016,999.55 = 251,640.54/x
  3. Step 3: Cross multiply
    678,021.71x = 1,016,999.55 × 251,640.54
  4. Step 4: Simplify right side
    678,021.71x = 255,918,315,941.76
  5. Step 5: Solve for x
    x = 255,918,315,941.76/678,021.71
  6. Step 6: Final answer
    x = 377,448.56

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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.