Finding the Fourth Proportional to 1,128,386.63, 1,680,852.12 and 1,067,269.70
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Solution
The fourth proportional to 1,128,386.63, 1,680,852.12 and 1,067,269.70 is: 1,589,811.94
Step by Step Solution
- Step 1: Write the proportion equation
1,128,386.63 : 1,680,852.12 = 1,067,269.70 : x - Step 2: Convert to fraction form
1,128,386.63/1,680,852.12 = 1,067,269.70/x - Step 3: Cross multiply
1,128,386.63x = 1,680,852.12 × 1,067,269.70 - Step 4: Simplify right side
1,128,386.63x = 1,793,922,537,856.76 - Step 5: Solve for x
x = 1,793,922,537,856.76/1,128,386.63 - Step 6: Final answer
x = 1,589,811.94
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.