Finding the Fourth Proportional to 669,364.86, 923,630.58 and 393,735.23
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Solution
The fourth proportional to 669,364.86, 923,630.58 and 393,735.23 is: 543,299.95
Step by Step Solution
- Step 1: Write the proportion equation
669,364.86 : 923,630.58 = 393,735.23 : x - Step 2: Convert to fraction form
669,364.86/923,630.58 = 393,735.23/x - Step 3: Cross multiply
669,364.86x = 923,630.58 × 393,735.23 - Step 4: Simplify right side
669,364.86x = 363,665,897,696.80 - Step 5: Solve for x
x = 363,665,897,696.80/669,364.86 - Step 6: Final answer
x = 543,299.95
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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.