Finding the Fourth Proportional to 664,984.10, 917,683.92 and 378,522.63
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Solution
The fourth proportional to 664,984.10, 917,683.92 and 378,522.63 is: 522,364.56
Step by Step Solution
- Step 1: Write the proportion equation
664,984.10 : 917,683.92 = 378,522.63 : x - Step 2: Convert to fraction form
664,984.10/917,683.92 = 378,522.63/x - Step 3: Cross multiply
664,984.10x = 917,683.92 × 378,522.63 - Step 4: Simplify right side
664,984.10x = 347,364,130,907.11 - Step 5: Solve for x
x = 347,364,130,907.11/664,984.10 - Step 6: Final answer
x = 522,364.56
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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.