Finding the Fourth Proportional to 818,403.25, 1,129,197.29 and 538,971.60
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Solution
The fourth proportional to 818,403.25, 1,129,197.29 and 538,971.60 is: 743,649.63
Step by Step Solution
- Step 1: Write the proportion equation
818,403.25 : 1,129,197.29 = 538,971.60 : x - Step 2: Convert to fraction form
818,403.25/1,129,197.29 = 538,971.60/x - Step 3: Cross multiply
818,403.25x = 1,129,197.29 × 538,971.60 - Step 4: Simplify right side
818,403.25x = 608,605,270,106.96 - Step 5: Solve for x
x = 608,605,270,106.96/818,403.25 - Step 6: Final answer
x = 743,649.63
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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.