Finding the Fourth Proportional to 7,777,505.40, 11,666,258.10 and 5,090,119.80
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Solution
The fourth proportional to 7,777,505.40, 11,666,258.10 and 5,090,119.80 is: 7,635,179.70
Step by Step Solution
- Step 1: Write the proportion equation
7,777,505.40 : 11,666,258.10 = 5,090,119.80 : x - Step 2: Convert to fraction form
7,777,505.40/11,666,258.10 = 5,090,119.80/x - Step 3: Cross multiply
7,777,505.40x = 11,666,258.10 × 5,090,119.80 - Step 4: Simplify right side
7,777,505.40x = 59,382,651,346,720.38 - Step 5: Solve for x
x = 59,382,651,346,720.38/7,777,505.40 - Step 6: Final answer
x = 7,635,179.70
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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.