Home / 685,251.56-945,635.66-379,321.38

Finding the Fourth Proportional to 685,251.56, 945,635.66 and 379,321.38

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Solution

The fourth proportional to 685,251.56, 945,635.66 and 379,321.38 is: 523,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,251.56 : 945,635.66 = 379,321.38 : x
  2. Step 2: Convert to fraction form
    685,251.56/945,635.66 = 379,321.38/x
  3. Step 3: Cross multiply
    685,251.56x = 945,635.66 × 379,321.38
  4. Step 4: Simplify right side
    685,251.56x = 358,699,821,631.80
  5. Step 5: Solve for x
    x = 358,699,821,631.80/685,251.56
  6. Step 6: Final answer
    x = 523,457.14

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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.