Home / 685,478.53-945,959.61-383,672.53

Finding the Fourth Proportional to 685,478.53, 945,959.61 and 383,672.53

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Solution

The fourth proportional to 685,478.53, 945,959.61 and 383,672.53 is: 529,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,478.53 : 945,959.61 = 383,672.53 : x
  2. Step 2: Convert to fraction form
    685,478.53/945,959.61 = 383,672.53/x
  3. Step 3: Cross multiply
    685,478.53x = 945,959.61 × 383,672.53
  4. Step 4: Simplify right side
    685,478.53x = 362,938,716,846.51
  5. Step 5: Solve for x
    x = 362,938,716,846.51/685,478.53
  6. Step 6: Final answer
    x = 529,467.67

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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.