Finding the Fourth Proportional to 7,739,688.70, 11,609,533.05 and 7,261,391.80
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Solution
The fourth proportional to 7,739,688.70, 11,609,533.05 and 7,261,391.80 is: 10,892,087.70
Step by Step Solution
- Step 1: Write the proportion equation
7,739,688.70 : 11,609,533.05 = 7,261,391.80 : x - Step 2: Convert to fraction form
7,739,688.70/11,609,533.05 = 7,261,391.80/x - Step 3: Cross multiply
7,739,688.70x = 11,609,533.05 × 7,261,391.80 - Step 4: Simplify right side
7,739,688.70x = 84,301,368,091,099 - Step 5: Solve for x
x = 84,301,368,091,099/7,739,688.70 - Step 6: Final answer
x = 10,892,087.70
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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.