Finding the Fourth Proportional to 7,821,148.80, 11,731,723.20 and 6,875,587.20
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Solution
The fourth proportional to 7,821,148.80, 11,731,723.20 and 6,875,587.20 is: 10,313,380.80
Step by Step Solution
- Step 1: Write the proportion equation
7,821,148.80 : 11,731,723.20 = 6,875,587.20 : x - Step 2: Convert to fraction form
7,821,148.80/11,731,723.20 = 6,875,587.20/x - Step 3: Cross multiply
7,821,148.80x = 11,731,723.20 × 6,875,587.20 - Step 4: Simplify right side
7,821,148.80x = 80,662,485,867,863.03 - Step 5: Solve for x
x = 80,662,485,867,863.03/7,821,148.80 - Step 6: Final answer
x = 10,313,380.80
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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.