Finding the Fourth Proportional to 1,100,641.74, 1,518,902.19 and 641,743.80
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Solution
The fourth proportional to 1,100,641.74, 1,518,902.19 and 641,743.80 is: 885,616.12
Step by Step Solution
- Step 1: Write the proportion equation
1,100,641.74 : 1,518,902.19 = 641,743.80 : x - Step 2: Convert to fraction form
1,100,641.74/1,518,902.19 = 641,743.80/x - Step 3: Cross multiply
1,100,641.74x = 1,518,902.19 × 641,743.80 - Step 4: Simplify right side
1,100,641.74x = 974,746,063,238.92 - Step 5: Solve for x
x = 974,746,063,238.92/1,100,641.74 - Step 6: Final answer
x = 885,616.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.