Finding the Fourth Proportional to 663,129.78, 994,988.70 and 347,511.66
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Solution
The fourth proportional to 663,129.78, 994,988.70 and 347,511.66 is: 521,421.58
Step by Step Solution
- Step 1: Write the proportion equation
663,129.78 : 994,988.70 = 347,511.66 : x - Step 2: Convert to fraction form
663,129.78/994,988.70 = 347,511.66/x - Step 3: Cross multiply
663,129.78x = 994,988.70 × 347,511.66 - Step 4: Simplify right side
663,129.78x = 345,770,174,818.24 - Step 5: Solve for x
x = 345,770,174,818.24/663,129.78 - Step 6: Final answer
x = 521,421.58
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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.