Finding the Fourth Proportional to 1,278,405.26, 1,917,109.53 and 479,250.75
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Solution
The fourth proportional to 1,278,405.26, 1,917,109.53 and 479,250.75 is: 718,689.30
Step by Step Solution
- Step 1: Write the proportion equation
1,278,405.26 : 1,917,109.53 = 479,250.75 : x - Step 2: Convert to fraction form
1,278,405.26/1,917,109.53 = 479,250.75/x - Step 3: Cross multiply
1,278,405.26x = 1,917,109.53 × 479,250.75 - Step 4: Simplify right side
1,278,405.26x = 918,776,180,084.65 - Step 5: Solve for x
x = 918,776,180,084.65/1,278,405.26 - Step 6: Final answer
x = 718,689.30
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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.