Finding the Fourth Proportional to 7,121,795.40, 10,687,285.80 and 3,929,212.80
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Solution
The fourth proportional to 7,121,795.40, 10,687,285.80 and 3,929,212.80 is: 5,896,353.07
Step by Step Solution
- Step 1: Write the proportion equation
7,121,795.40 : 10,687,285.80 = 3,929,212.80 : x - Step 2: Convert to fraction form
7,121,795.40/10,687,285.80 = 3,929,212.80/x - Step 3: Cross multiply
7,121,795.40x = 10,687,285.80 × 3,929,212.80 - Step 4: Simplify right side
7,121,795.40x = 41,992,620,162,618.24 - Step 5: Solve for x
x = 41,992,620,162,618.24/7,121,795.40 - Step 6: Final answer
x = 5,896,353.07
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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.