Finding the Fourth Proportional to 858,772.10, 1,287,769.35 and 326,116.10
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Solution
The fourth proportional to 858,772.10, 1,287,769.35 and 326,116.10 is: 489,026.50
Step by Step Solution
- Step 1: Write the proportion equation
858,772.10 : 1,287,769.35 = 326,116.10 : x - Step 2: Convert to fraction form
858,772.10/1,287,769.35 = 326,116.10/x - Step 3: Cross multiply
858,772.10x = 1,287,769.35 × 326,116.10 - Step 4: Simplify right side
858,772.10x = 419,962,318,121.54 - Step 5: Solve for x
x = 419,962,318,121.54/858,772.10 - Step 6: Final answer
x = 489,026.50
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1.5x scale
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.