Finding the Fourth Proportional to 515,906.49, 711,950.94 and 289,551.99
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Solution
The fourth proportional to 515,906.49, 711,950.94 and 289,551.99 is: 399,581.74
Step by Step Solution
- Step 1: Write the proportion equation
515,906.49 : 711,950.94 = 289,551.99 : x - Step 2: Convert to fraction form
515,906.49/711,950.94 = 289,551.99/x - Step 3: Cross multiply
515,906.49x = 711,950.94 × 289,551.99 - Step 4: Simplify right side
515,906.49x = 206,146,811,459.37 - Step 5: Solve for x
x = 206,146,811,459.37/515,906.49 - Step 6: Final answer
x = 399,581.74
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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.