Home / 449,979.27-621,034.80-275,653.50

Finding the Fourth Proportional to 449,979.27, 621,034.80 and 275,653.50

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Solution

The fourth proportional to 449,979.27, 621,034.80 and 275,653.50 is: 380,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,979.27 : 621,034.80 = 275,653.50 : x
  2. Step 2: Convert to fraction form
    449,979.27/621,034.80 = 275,653.50/x
  3. Step 3: Cross multiply
    449,979.27x = 621,034.80 × 275,653.50
  4. Step 4: Simplify right side
    449,979.27x = 171,190,416,241.80
  5. Step 5: Solve for x
    x = 171,190,416,241.80/449,979.27
  6. Step 6: Final answer
    x = 380,440.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.