Home / 685,429.47-945,922.21-379,505.84

Finding the Fourth Proportional to 685,429.47, 945,922.21 and 379,505.84

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Solution

The fourth proportional to 685,429.47, 945,922.21 and 379,505.84 is: 523,734.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,429.47 : 945,922.21 = 379,505.84 : x
  2. Step 2: Convert to fraction form
    685,429.47/945,922.21 = 379,505.84/x
  3. Step 3: Cross multiply
    685,429.47x = 945,922.21 × 379,505.84
  4. Step 4: Simplify right side
    685,429.47x = 358,982,997,202.33
  5. Step 5: Solve for x
    x = 358,982,997,202.33/685,429.47
  6. Step 6: Final answer
    x = 523,734.41

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1.5x scale

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.