Finding the Fourth Proportional to 778,161.94, 1,073,863.47 and 420,465.94
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Solution
The fourth proportional to 778,161.94, 1,073,863.47 and 420,465.94 is: 580,242.99
Step by Step Solution
- Step 1: Write the proportion equation
778,161.94 : 1,073,863.47 = 420,465.94 : x - Step 2: Convert to fraction form
778,161.94/1,073,863.47 = 420,465.94/x - Step 3: Cross multiply
778,161.94x = 1,073,863.47 × 420,465.94 - Step 4: Simplify right side
778,161.94x = 451,523,012,237.30 - Step 5: Solve for x
x = 451,523,012,237.30/778,161.94 - Step 6: Final answer
x = 580,242.99
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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.