Finding the Fourth Proportional to 7,408,086.20, 11,112,129.30 and 4,372,335.80
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Solution
The fourth proportional to 7,408,086.20, 11,112,129.30 and 4,372,335.80 is: 6,558,503.70
Step by Step Solution
- Step 1: Write the proportion equation
7,408,086.20 : 11,112,129.30 = 4,372,335.80 : x - Step 2: Convert to fraction form
7,408,086.20/11,112,129.30 = 4,372,335.80/x - Step 3: Cross multiply
7,408,086.20x = 11,112,129.30 × 4,372,335.80 - Step 4: Simplify right side
7,408,086.20x = 48,585,960,752,618.94 - Step 5: Solve for x
x = 48,585,960,752,618.94/7,408,086.20 - Step 6: Final answer
x = 6,558,503.70
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1.5x scale
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.