Home / 685,910.70-946,546.54-379,986.46

Finding the Fourth Proportional to 685,910.70, 946,546.54 and 379,986.46

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Solution

The fourth proportional to 685,910.70, 946,546.54 and 379,986.46 is: 524,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,910.70 : 946,546.54 = 379,986.46 : x
  2. Step 2: Convert to fraction form
    685,910.70/946,546.54 = 379,986.46/x
  3. Step 3: Cross multiply
    685,910.70x = 946,546.54 × 379,986.46
  4. Step 4: Simplify right side
    685,910.70x = 359,674,868,959.85
  5. Step 5: Solve for x
    x = 359,674,868,959.85/685,910.70
  6. Step 6: Final answer
    x = 524,375.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.