Finding the Fourth Proportional to 664,984.36, 917,684.26 and 378,522.88
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Solution
The fourth proportional to 664,984.36, 917,684.26 and 378,522.88 is: 522,364.90
Step by Step Solution
- Step 1: Write the proportion equation
664,984.36 : 917,684.26 = 378,522.88 : x - Step 2: Convert to fraction form
664,984.36/917,684.26 = 378,522.88/x - Step 3: Cross multiply
664,984.36x = 917,684.26 × 378,522.88 - Step 4: Simplify right side
664,984.36x = 347,364,489,025.87 - Step 5: Solve for x
x = 347,364,489,025.87/664,984.36 - Step 6: Final answer
x = 522,364.90
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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.