Home / 490,259.20-734,865.60-279,443.20

Finding the Fourth Proportional to 490,259.20, 734,865.60 and 279,443.20

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Solution

The fourth proportional to 490,259.20, 734,865.60 and 279,443.20 is: 418,866.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,259.20 : 734,865.60 = 279,443.20 : x
  2. Step 2: Convert to fraction form
    490,259.20/734,865.60 = 279,443.20/x
  3. Step 3: Cross multiply
    490,259.20x = 734,865.60 × 279,443.20
  4. Step 4: Simplify right side
    490,259.20x = 205,353,194,833.92
  5. Step 5: Solve for x
    x = 205,353,194,833.92/490,259.20
  6. Step 6: Final answer
    x = 418,866.58

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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.