Finding the Fourth Proportional to 1,278,776.94, 1,918,471.95 and 425,855.97
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Solution
The fourth proportional to 1,278,776.94, 1,918,471.95 and 425,855.97 is: 638,886.04
Step by Step Solution
- Step 1: Write the proportion equation
1,278,776.94 : 1,918,471.95 = 425,855.97 : x - Step 2: Convert to fraction form
1,278,776.94/1,918,471.95 = 425,855.97/x - Step 3: Cross multiply
1,278,776.94x = 1,918,471.95 × 425,855.97 - Step 4: Simplify right side
1,278,776.94x = 816,992,733,185.04 - Step 5: Solve for x
x = 816,992,733,185.04/1,278,776.94 - Step 6: Final answer
x = 638,886.04
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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.