Finding the Fourth Proportional to 3,121,722.69, 4,307,994.57 and 1,745,124.42
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Solution
The fourth proportional to 3,121,722.69, 4,307,994.57 and 1,745,124.42 is: 2,408,281.35
Step by Step Solution
- Step 1: Write the proportion equation
3,121,722.69 : 4,307,994.57 = 1,745,124.42 : x - Step 2: Convert to fraction form
3,121,722.69/4,307,994.57 = 1,745,124.42/x - Step 3: Cross multiply
3,121,722.69x = 4,307,994.57 × 1,745,124.42 - Step 4: Simplify right side
3,121,722.69x = 7,517,986,525,334.40 - Step 5: Solve for x
x = 7,517,986,525,334.40/3,121,722.69 - Step 6: Final answer
x = 2,408,281.35
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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.