Finding the Fourth Proportional to 861,368.49, 1,188,668.29 and 479,387.07
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Solution
The fourth proportional to 861,368.49, 1,188,668.29 and 479,387.07 is: 661,542.90
Step by Step Solution
- Step 1: Write the proportion equation
861,368.49 : 1,188,668.29 = 479,387.07 : x - Step 2: Convert to fraction form
861,368.49/1,188,668.29 = 479,387.07/x - Step 3: Cross multiply
861,368.49x = 1,188,668.29 × 479,387.07 - Step 4: Simplify right side
861,368.49x = 569,832,208,745.01 - Step 5: Solve for x
x = 569,832,208,745.01/861,368.49 - Step 6: Final answer
x = 661,542.90
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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.