Finding the Fourth Proportional to 664,755.12, 917,349.53 and 406,613.07
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Solution
The fourth proportional to 664,755.12, 917,349.53 and 406,613.07 is: 561,118.37
Step by Step Solution
- Step 1: Write the proportion equation
664,755.12 : 917,349.53 = 406,613.07 : x - Step 2: Convert to fraction form
664,755.12/917,349.53 = 406,613.07/x - Step 3: Cross multiply
664,755.12x = 917,349.53 × 406,613.07 - Step 4: Simplify right side
664,755.12x = 373,006,306,623.29 - Step 5: Solve for x
x = 373,006,306,623.29/664,755.12 - Step 6: Final answer
x = 561,118.37
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1.5x scale
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.