Home / 789,706.85-1,089,795.65-445,615.70

Finding the Fourth Proportional to 789,706.85, 1,089,795.65 and 445,615.70

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Solution

The fourth proportional to 789,706.85, 1,089,795.65 and 445,615.70 is: 614,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,706.85 : 1,089,795.65 = 445,615.70 : x
  2. Step 2: Convert to fraction form
    789,706.85/1,089,795.65 = 445,615.70/x
  3. Step 3: Cross multiply
    789,706.85x = 1,089,795.65 × 445,615.70
  4. Step 4: Simplify right side
    789,706.85x = 485,630,043,754.65
  5. Step 5: Solve for x
    x = 485,630,043,754.65/789,706.85
  6. Step 6: Final answer
    x = 614,949.77

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Double scale
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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.