Finding the Fourth Proportional to 861,241.11, 1,188,495.12 and 539,128.81
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Solution
The fourth proportional to 861,241.11, 1,188,495.12 and 539,128.81 is: 743,986.73
Step by Step Solution
- Step 1: Write the proportion equation
861,241.11 : 1,188,495.12 = 539,128.81 : x - Step 2: Convert to fraction form
861,241.11/1,188,495.12 = 539,128.81/x - Step 3: Cross multiply
861,241.11x = 1,188,495.12 × 539,128.81 - Step 4: Simplify right side
861,241.11x = 640,751,959,736.41 - Step 5: Solve for x
x = 640,751,959,736.41/861,241.11 - Step 6: Final answer
x = 743,986.73
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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.