Finding the Fourth Proportional to 7,408,412.60, 11,112,618.90 and 3,148,719.80
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Solution
The fourth proportional to 7,408,412.60, 11,112,618.90 and 3,148,719.80 is: 4,723,079.70
Step by Step Solution
- Step 1: Write the proportion equation
7,408,412.60 : 11,112,618.90 = 3,148,719.80 : x - Step 2: Convert to fraction form
7,408,412.60/11,112,618.90 = 3,148,719.80/x - Step 3: Cross multiply
7,408,412.60x = 11,112,618.90 × 3,148,719.80 - Step 4: Simplify right side
7,408,412.60x = 34,990,523,160,284.22 - Step 5: Solve for x
x = 34,990,523,160,284.22/7,408,412.60 - Step 6: Final answer
x = 4,723,079.70
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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.