Finding the Fourth Proportional to 639,683.64, 882,757.26 and 353,197.62
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Solution
The fourth proportional to 639,683.64, 882,757.26 and 353,197.62 is: 487,409.31
Step by Step Solution
- Step 1: Write the proportion equation
639,683.64 : 882,757.26 = 353,197.62 : x - Step 2: Convert to fraction form
639,683.64/882,757.26 = 353,197.62/x - Step 3: Cross multiply
639,683.64x = 882,757.26 × 353,197.62 - Step 4: Simplify right side
639,683.64x = 311,787,763,269.72 - Step 5: Solve for x
x = 311,787,763,269.72/639,683.64 - Step 6: Final answer
x = 487,409.31
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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.