Finding the Fourth Proportional to 1,008,918.48, 1,391,519.84 and 646,375.84
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Solution
The fourth proportional to 1,008,918.48, 1,391,519.84 and 646,375.84 is: 891,494.03
Step by Step Solution
- Step 1: Write the proportion equation
1,008,918.48 : 1,391,519.84 = 646,375.84 : x - Step 2: Convert to fraction form
1,008,918.48/1,391,519.84 = 646,375.84/x - Step 3: Cross multiply
1,008,918.48x = 1,391,519.84 × 646,375.84 - Step 4: Simplify right side
1,008,918.48x = 899,444,805,456.67 - Step 5: Solve for x
x = 899,444,805,456.67/1,008,918.48 - Step 6: Final answer
x = 891,494.03
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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.