Finding the Fourth Proportional to 641,328.21, 884,647.31 and 423,538.88
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Solution
The fourth proportional to 641,328.21, 884,647.31 and 423,538.88 is: 584,228.99
Step by Step Solution
- Step 1: Write the proportion equation
641,328.21 : 884,647.31 = 423,538.88 : x - Step 2: Convert to fraction form
641,328.21/884,647.31 = 423,538.88/x - Step 3: Cross multiply
641,328.21x = 884,647.31 × 423,538.88 - Step 4: Simplify right side
641,328.21x = 374,682,530,872.41 - Step 5: Solve for x
x = 374,682,530,872.41/641,328.21 - Step 6: Final answer
x = 584,228.99
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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.