Finding the Fourth Proportional to 861,681.36, 1,292,713.92 and 262,689.06
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Solution
The fourth proportional to 861,681.36, 1,292,713.92 and 262,689.06 is: 394,092.09
Step by Step Solution
- Step 1: Write the proportion equation
861,681.36 : 1,292,713.92 = 262,689.06 : x - Step 2: Convert to fraction form
861,681.36/1,292,713.92 = 262,689.06/x - Step 3: Cross multiply
861,681.36x = 1,292,713.92 × 262,689.06 - Step 4: Simplify right side
861,681.36x = 339,581,804,493.72 - Step 5: Solve for x
x = 339,581,804,493.72/861,681.36 - Step 6: Final answer
x = 394,092.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.