Finding the Fourth Proportional to 7,490,478.40, 11,235,717.60 and 7,415,828.80
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Solution
The fourth proportional to 7,490,478.40, 11,235,717.60 and 7,415,828.80 is: 11,123,743.20
Step by Step Solution
- Step 1: Write the proportion equation
7,490,478.40 : 11,235,717.60 = 7,415,828.80 : x - Step 2: Convert to fraction form
7,490,478.40/11,235,717.60 = 7,415,828.80/x - Step 3: Cross multiply
7,490,478.40x = 11,235,717.60 × 7,415,828.80 - Step 4: Simplify right side
7,490,478.40x = 83,322,158,166,746.88 - Step 5: Solve for x
x = 83,322,158,166,746.88/7,490,478.40 - Step 6: Final answer
x = 11,123,743.20
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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.