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Finding the Fourth Proportional to 405,980.56, 607,757.55 and 245,571.05

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Solution

The fourth proportional to 405,980.56, 607,757.55 and 245,571.05 is: 367,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,980.56 : 607,757.55 = 245,571.05 : x
  2. Step 2: Convert to fraction form
    405,980.56/607,757.55 = 245,571.05/x
  3. Step 3: Cross multiply
    405,980.56x = 607,757.55 × 245,571.05
  4. Step 4: Simplify right side
    405,980.56x = 149,247,660,660.12
  5. Step 5: Solve for x
    x = 149,247,660,660.12/405,980.56
  6. Step 6: Final answer
    x = 367,622.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.