Home / 420,739.57-631,104.79-336,102.67

Finding the Fourth Proportional to 420,739.57, 631,104.79 and 336,102.67

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Solution

The fourth proportional to 420,739.57, 631,104.79 and 336,102.67 is: 504,150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,739.57 : 631,104.79 = 336,102.67 : x
  2. Step 2: Convert to fraction form
    420,739.57/631,104.79 = 336,102.67/x
  3. Step 3: Cross multiply
    420,739.57x = 631,104.79 × 336,102.67
  4. Step 4: Simplify right side
    420,739.57x = 212,116,001,813.27
  5. Step 5: Solve for x
    x = 212,116,001,813.27/420,739.57
  6. Step 6: Final answer
    x = 504,150.36

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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.