Home / 685,429.60-945,922.40-379,505.96

Finding the Fourth Proportional to 685,429.60, 945,922.40 and 379,505.96

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Solution

The fourth proportional to 685,429.60, 945,922.40 and 379,505.96 is: 523,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,429.60 : 945,922.40 = 379,505.96 : x
  2. Step 2: Convert to fraction form
    685,429.60/945,922.40 = 379,505.96/x
  3. Step 3: Cross multiply
    685,429.60x = 945,922.40 × 379,505.96
  4. Step 4: Simplify right side
    685,429.60x = 358,983,188,964.78
  5. Step 5: Solve for x
    x = 358,983,188,964.78/685,429.60
  6. Step 6: Final answer
    x = 523,734.59

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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.