Finding the Fourth Proportional to 3,929,065.64, 5,421,625.62 and 2,478,213.08
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Solution
The fourth proportional to 3,929,065.64, 5,421,625.62 and 2,478,213.08 is: 3,419,628.17
Step by Step Solution
- Step 1: Write the proportion equation
3,929,065.64 : 5,421,625.62 = 2,478,213.08 : x - Step 2: Convert to fraction form
3,929,065.64/5,421,625.62 = 2,478,213.08/x - Step 3: Cross multiply
3,929,065.64x = 5,421,625.62 × 2,478,213.08 - Step 4: Simplify right side
3,929,065.64x = 13,435,943,526,347.11 - Step 5: Solve for x
x = 13,435,943,526,347.11/3,929,065.64 - Step 6: Final answer
x = 3,419,628.17
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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.