Home / 439,739.20-659,608.80-298,021.60

Finding the Fourth Proportional to 439,739.20, 659,608.80 and 298,021.60

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Solution

The fourth proportional to 439,739.20, 659,608.80 and 298,021.60 is: 447,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,739.20 : 659,608.80 = 298,021.60 : x
  2. Step 2: Convert to fraction form
    439,739.20/659,608.80 = 298,021.60/x
  3. Step 3: Cross multiply
    439,739.20x = 659,608.80 × 298,021.60
  4. Step 4: Simplify right side
    439,739.20x = 196,577,669,950.08
  5. Step 5: Solve for x
    x = 196,577,669,950.08/439,739.20
  6. Step 6: Final answer
    x = 447,032.40

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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.