Finding the Fourth Proportional to 518,749.39, 715,872.72 and 289,306.99
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Solution
The fourth proportional to 518,749.39, 715,872.72 and 289,306.99 is: 399,242.84
Step by Step Solution
- Step 1: Write the proportion equation
518,749.39 : 715,872.72 = 289,306.99 : x - Step 2: Convert to fraction form
518,749.39/715,872.72 = 289,306.99/x - Step 3: Cross multiply
518,749.39x = 715,872.72 × 289,306.99 - Step 4: Simplify right side
518,749.39x = 207,106,981,846.31 - Step 5: Solve for x
x = 207,106,981,846.31/518,749.39 - Step 6: Final answer
x = 399,242.84
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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.