Finding the Fourth Proportional to 647,676.96, 893,489.16 and 421,239.84
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Solution
The fourth proportional to 647,676.96, 893,489.16 and 421,239.84 is: 581,112.58
Step by Step Solution
- Step 1: Write the proportion equation
647,676.96 : 893,489.16 = 421,239.84 : x - Step 2: Convert to fraction form
647,676.96/893,489.16 = 421,239.84/x - Step 3: Cross multiply
647,676.96x = 893,489.16 × 421,239.84 - Step 4: Simplify right side
647,676.96x = 376,373,230,800.13 - Step 5: Solve for x
x = 376,373,230,800.13/647,676.96 - Step 6: Final answer
x = 581,112.58
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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.