Finding the Fourth Proportional to 664,791.75, 917,415.05 and 362,985.75
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Solution
The fourth proportional to 664,791.75, 917,415.05 and 362,985.75 is: 500,921.66
Step by Step Solution
- Step 1: Write the proportion equation
664,791.75 : 917,415.05 = 362,985.75 : x - Step 2: Convert to fraction form
664,791.75/917,415.05 = 362,985.75/x - Step 3: Cross multiply
664,791.75x = 917,415.05 × 362,985.75 - Step 4: Simplify right side
664,791.75x = 333,008,588,170.61 - Step 5: Solve for x
x = 333,008,588,170.61/664,791.75 - Step 6: Final answer
x = 500,921.66
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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.