Finding the Fourth Proportional to 669,489.48, 923,436.96 and 427,664.70
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Solution
The fourth proportional to 669,489.48, 923,436.96 and 427,664.70 is: 589,884.39
Step by Step Solution
- Step 1: Write the proportion equation
669,489.48 : 923,436.96 = 427,664.70 : x - Step 2: Convert to fraction form
669,489.48/923,436.96 = 427,664.70/x - Step 3: Cross multiply
669,489.48x = 923,436.96 × 427,664.70 - Step 4: Simplify right side
669,489.48x = 394,921,390,467.31 - Step 5: Solve for x
x = 394,921,390,467.31/669,489.48 - Step 6: Final answer
x = 589,884.39
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1.5x scale
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.