Finding the Fourth Proportional to 7,872,892.20, 11,809,338.30 and 7,201,045.80
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Solution
The fourth proportional to 7,872,892.20, 11,809,338.30 and 7,201,045.80 is: 10,801,568.70
Step by Step Solution
- Step 1: Write the proportion equation
7,872,892.20 : 11,809,338.30 = 7,201,045.80 : x - Step 2: Convert to fraction form
7,872,892.20/11,809,338.30 = 7,201,045.80/x - Step 3: Cross multiply
7,872,892.20x = 11,809,338.30 × 7,201,045.80 - Step 4: Simplify right side
7,872,892.20x = 85,039,585,965,994.14 - Step 5: Solve for x
x = 85,039,585,965,994.14/7,872,892.20 - Step 6: Final answer
x = 10,801,568.70
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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.