Finding the Fourth Proportional to 2,486,645.28, 3,431,374.20 and 1,398,700.26
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Solution
The fourth proportional to 2,486,645.28, 3,431,374.20 and 1,398,700.26 is: 1,930,095.95
Step by Step Solution
- Step 1: Write the proportion equation
2,486,645.28 : 3,431,374.20 = 1,398,700.26 : x - Step 2: Convert to fraction form
2,486,645.28/3,431,374.20 = 1,398,700.26/x - Step 3: Cross multiply
2,486,645.28x = 3,431,374.20 × 1,398,700.26 - Step 4: Simplify right side
2,486,645.28x = 4,799,463,985,697.29 - Step 5: Solve for x
x = 4,799,463,985,697.29/2,486,645.28 - Step 6: Final answer
x = 1,930,095.95
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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.