Finding the Fourth Proportional to 5,229,986.76, 7,845,157.12 and 1,391,812.96
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Solution
The fourth proportional to 5,229,986.76, 7,845,157.12 and 1,391,812.96 is: 2,087,766.54
Step by Step Solution
- Step 1: Write the proportion equation
5,229,986.76 : 7,845,157.12 = 1,391,812.96 : x - Step 2: Convert to fraction form
5,229,986.76/7,845,157.12 = 1,391,812.96/x - Step 3: Cross multiply
5,229,986.76x = 7,845,157.12 × 1,391,812.96 - Step 4: Simplify right side
5,229,986.76x = 10,918,991,352,852.28 - Step 5: Solve for x
x = 10,918,991,352,852.28/5,229,986.76 - Step 6: Final answer
x = 2,087,766.54
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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.