Finding the Fourth Proportional to 2,238,638.47, 3,089,331.48 and 1,271,821.80
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Solution
The fourth proportional to 2,238,638.47, 3,089,331.48 and 1,271,821.80 is: 1,755,119.99
Step by Step Solution
- Step 1: Write the proportion equation
2,238,638.47 : 3,089,331.48 = 1,271,821.80 : x - Step 2: Convert to fraction form
2,238,638.47/3,089,331.48 = 1,271,821.80/x - Step 3: Cross multiply
2,238,638.47x = 3,089,331.48 × 1,271,821.80 - Step 4: Simplify right side
2,238,638.47x = 3,929,079,123,690.26 - Step 5: Solve for x
x = 3,929,079,123,690.26/2,238,638.47 - Step 6: Final answer
x = 1,755,119.99
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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.