Finding the Fourth Proportional to 664,985.10, 917,685.30 and 378,523.63
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Solution
The fourth proportional to 664,985.10, 917,685.30 and 378,523.63 is: 522,365.95
Step by Step Solution
- Step 1: Write the proportion equation
664,985.10 : 917,685.30 = 378,523.63 : x - Step 2: Convert to fraction form
664,985.10/917,685.30 = 378,523.63/x - Step 3: Cross multiply
664,985.10x = 917,685.30 × 378,523.63 - Step 4: Simplify right side
664,985.10x = 347,365,570,953.64 - Step 5: Solve for x
x = 347,365,570,953.64/664,985.10 - Step 6: Final answer
x = 522,365.95
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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.