Home / 490,301.20-734,928.60-279,485.20

Finding the Fourth Proportional to 490,301.20, 734,928.60 and 279,485.20

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Solution

The fourth proportional to 490,301.20, 734,928.60 and 279,485.20 is: 418,929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,301.20 : 734,928.60 = 279,485.20 : x
  2. Step 2: Convert to fraction form
    490,301.20/734,928.60 = 279,485.20/x
  3. Step 3: Cross multiply
    490,301.20x = 734,928.60 × 279,485.20
  4. Step 4: Simplify right side
    490,301.20x = 205,401,666,756.72
  5. Step 5: Solve for x
    x = 205,401,666,756.72/490,301.20
  6. Step 6: Final answer
    x = 418,929.56

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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.