Finding the Fourth Proportional to 515,979.99, 711,975.29 and 289,581.75
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Solution
The fourth proportional to 515,979.99, 711,975.29 and 289,581.75 is: 399,579.54
Step by Step Solution
- Step 1: Write the proportion equation
515,979.99 : 711,975.29 = 289,581.75 : x - Step 2: Convert to fraction form
515,979.99/711,975.29 = 289,581.75/x - Step 3: Cross multiply
515,979.99x = 711,975.29 × 289,581.75 - Step 4: Simplify right side
515,979.99x = 206,175,048,987.05 - Step 5: Solve for x
x = 206,175,048,987.05/515,979.99 - Step 6: Final answer
x = 399,579.54
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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.