Home / 685,511.20-945,993.84-379,580.98

Finding the Fourth Proportional to 685,511.20, 945,993.84 and 379,580.98

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Solution

The fourth proportional to 685,511.20, 945,993.84 and 379,580.98 is: 523,815.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,511.20 : 945,993.84 = 379,580.98 : x
  2. Step 2: Convert to fraction form
    685,511.20/945,993.84 = 379,580.98/x
  3. Step 3: Cross multiply
    685,511.20x = 945,993.84 × 379,580.98
  4. Step 4: Simplify right side
    685,511.20x = 359,081,268,861.16
  5. Step 5: Solve for x
    x = 359,081,268,861.16/685,511.20
  6. Step 6: Final answer
    x = 523,815.32

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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.