Home / 685,917.18-946,360.74-443,816.28

Finding the Fourth Proportional to 685,917.18, 946,360.74 and 443,816.28

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Solution

The fourth proportional to 685,917.18, 946,360.74 and 443,816.28 is: 612,333.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,917.18 : 946,360.74 = 443,816.28 : x
  2. Step 2: Convert to fraction form
    685,917.18/946,360.74 = 443,816.28/x
  3. Step 3: Cross multiply
    685,917.18x = 946,360.74 × 443,816.28
  4. Step 4: Simplify right side
    685,917.18x = 420,010,303,164.85
  5. Step 5: Solve for x
    x = 420,010,303,164.85/685,917.18
  6. Step 6: Final answer
    x = 612,333.84

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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.