Finding the Fourth Proportional to 7,241,665.20, 10,862,497.80 and 7,129,690.80
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Solution
The fourth proportional to 7,241,665.20, 10,862,497.80 and 7,129,690.80 is: 10,694,536.20
Step by Step Solution
- Step 1: Write the proportion equation
7,241,665.20 : 10,862,497.80 = 7,129,690.80 : x - Step 2: Convert to fraction form
7,241,665.20/10,862,497.80 = 7,129,690.80/x - Step 3: Cross multiply
7,241,665.20x = 10,862,497.80 × 7,129,690.80 - Step 4: Simplify right side
7,241,665.20x = 77,446,250,629,680.25 - Step 5: Solve for x
x = 77,446,250,629,680.25/7,241,665.20 - Step 6: Final answer
x = 10,694,536.20
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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.