Finding the Fourth Proportional to 920,153.21, 1,380,511.49 and 471,191.94
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Solution
The fourth proportional to 920,153.21, 1,380,511.49 and 471,191.94 is: 706,932.15
Step by Step Solution
- Step 1: Write the proportion equation
920,153.21 : 1,380,511.49 = 471,191.94 : x - Step 2: Convert to fraction form
920,153.21/1,380,511.49 = 471,191.94/x - Step 3: Cross multiply
920,153.21x = 1,380,511.49 × 471,191.94 - Step 4: Simplify right side
920,153.21x = 650,485,884,809.43 - Step 5: Solve for x
x = 650,485,884,809.43/920,153.21 - Step 6: Final answer
x = 706,932.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.