Finding the Fourth Proportional to 7,672,220.40, 11,520,772.20 and 5,557,148.40
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Solution
The fourth proportional to 7,672,220.40, 11,520,772.20 and 5,557,148.40 is: 8,344,734.31
Step by Step Solution
- Step 1: Write the proportion equation
7,672,220.40 : 11,520,772.20 = 5,557,148.40 : x - Step 2: Convert to fraction form
7,672,220.40/11,520,772.20 = 5,557,148.40/x - Step 3: Cross multiply
7,672,220.40x = 11,520,772.20 × 5,557,148.40 - Step 4: Simplify right side
7,672,220.40x = 64,022,640,797,994.48 - Step 5: Solve for x
x = 64,022,640,797,994.48/7,672,220.40 - Step 6: Final answer
x = 8,344,734.31
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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.