Home / 686,566.37-947,517.73-380,738.67

Finding the Fourth Proportional to 686,566.37, 947,517.73 and 380,738.67

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Solution

The fourth proportional to 686,566.37, 947,517.73 and 380,738.67 is: 525,450.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,566.37 : 947,517.73 = 380,738.67 : x
  2. Step 2: Convert to fraction form
    686,566.37/947,517.73 = 380,738.67/x
  3. Step 3: Cross multiply
    686,566.37x = 947,517.73 × 380,738.67
  4. Step 4: Simplify right side
    686,566.37x = 360,756,640,321.62
  5. Step 5: Solve for x
    x = 360,756,640,321.62/686,566.37
  6. Step 6: Final answer
    x = 525,450.50

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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.