Finding the Fourth Proportional to 621,971.93, 858,586.09 and 418,141.07
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Solution
The fourth proportional to 621,971.93, 858,586.09 and 418,141.07 is: 577,212.71
Step by Step Solution
- Step 1: Write the proportion equation
621,971.93 : 858,586.09 = 418,141.07 : x - Step 2: Convert to fraction form
621,971.93/858,586.09 = 418,141.07/x - Step 3: Cross multiply
621,971.93x = 858,586.09 × 418,141.07 - Step 4: Simplify right side
621,971.93x = 359,010,102,066.79 - Step 5: Solve for x
x = 359,010,102,066.79/621,971.93 - Step 6: Final answer
x = 577,212.71
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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.