Finding the Fourth Proportional to 1,278,149.59, 1,917,093.12 and 678,474.19
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Solution
The fourth proportional to 1,278,149.59, 1,917,093.12 and 678,474.19 is: 1,017,641.61
Step by Step Solution
- Step 1: Write the proportion equation
1,278,149.59 : 1,917,093.12 = 678,474.19 : x - Step 2: Convert to fraction form
1,278,149.59/1,917,093.12 = 678,474.19/x - Step 3: Cross multiply
1,278,149.59x = 1,917,093.12 × 678,474.19 - Step 4: Simplify right side
1,278,149.59x = 1,300,698,201,746.57 - Step 5: Solve for x
x = 1,300,698,201,746.57/1,278,149.59 - Step 6: Final answer
x = 1,017,641.61
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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.