Finding the Fourth Proportional to 515,379.80, 711,224.96 and 285,929.88
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Solution
The fourth proportional to 515,379.80, 711,224.96 and 285,929.88 is: 394,583.70
Step by Step Solution
- Step 1: Write the proportion equation
515,379.80 : 711,224.96 = 285,929.88 : x - Step 2: Convert to fraction form
515,379.80/711,224.96 = 285,929.88/x - Step 3: Cross multiply
515,379.80x = 711,224.96 × 285,929.88 - Step 4: Simplify right side
515,379.80x = 203,360,467,465.81 - Step 5: Solve for x
x = 203,360,467,465.81/515,379.80 - Step 6: Final answer
x = 394,583.70
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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.