Finding the Fourth Proportional to 492,514.65, 679,640.94 and 285,767.06
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Solution
The fourth proportional to 492,514.65, 679,640.94 and 285,767.06 is: 394,341.55
Step by Step Solution
- Step 1: Write the proportion equation
492,514.65 : 679,640.94 = 285,767.06 : x - Step 2: Convert to fraction form
492,514.65/679,640.94 = 285,767.06/x - Step 3: Cross multiply
492,514.65x = 679,640.94 × 285,767.06 - Step 4: Simplify right side
492,514.65x = 194,218,989,881.23 - Step 5: Solve for x
x = 194,218,989,881.23/492,514.65 - Step 6: Final answer
x = 394,341.55
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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.