Finding the Fourth Proportional to 1,278,305.98, 1,916,958.69 and 479,151.68
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Solution
The fourth proportional to 1,278,305.98, 1,916,958.69 and 479,151.68 is: 718,539.99
Step by Step Solution
- Step 1: Write the proportion equation
1,278,305.98 : 1,916,958.69 = 479,151.68 : x - Step 2: Convert to fraction form
1,278,305.98/1,916,958.69 = 479,151.68/x - Step 3: Cross multiply
1,278,305.98x = 1,916,958.69 × 479,151.68 - Step 4: Simplify right side
1,278,305.98x = 918,513,967,219.31 - Step 5: Solve for x
x = 918,513,967,219.31/1,278,305.98 - Step 6: Final answer
x = 718,539.99
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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.