Finding the Fourth Proportional to 699,052.38, 964,683.12 and 393,128.70
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Solution
The fourth proportional to 699,052.38, 964,683.12 and 393,128.70 is: 542,512.45
Step by Step Solution
- Step 1: Write the proportion equation
699,052.38 : 964,683.12 = 393,128.70 : x - Step 2: Convert to fraction form
699,052.38/964,683.12 = 393,128.70/x - Step 3: Cross multiply
699,052.38x = 964,683.12 × 393,128.70 - Step 4: Simplify right side
699,052.38x = 379,244,620,877.54 - Step 5: Solve for x
x = 379,244,620,877.54/699,052.38 - Step 6: Final answer
x = 542,512.45
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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.