Finding the Fourth Proportional to 681,121.68, 1,021,915.92 and 260,517.84
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Solution
The fourth proportional to 681,121.68, 1,021,915.92 and 260,517.84 is: 390,866.03
Step by Step Solution
- Step 1: Write the proportion equation
681,121.68 : 1,021,915.92 = 260,517.84 : x - Step 2: Convert to fraction form
681,121.68/1,021,915.92 = 260,517.84/x - Step 3: Cross multiply
681,121.68x = 1,021,915.92 × 260,517.84 - Step 4: Simplify right side
681,121.68x = 266,227,328,140.01 - Step 5: Solve for x
x = 266,227,328,140.01/681,121.68 - Step 6: Final answer
x = 390,866.03
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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.