Finding the Fourth Proportional to 12,230,990.75, 16,878,778.04 and 6,724,459.28
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Solution
The fourth proportional to 12,230,990.75, 16,878,778.04 and 6,724,459.28 is: 9,279,759.75
Step by Step Solution
- Step 1: Write the proportion equation
12,230,990.75 : 16,878,778.04 = 6,724,459.28 : x - Step 2: Convert to fraction form
12,230,990.75/16,878,778.04 = 6,724,459.28/x - Step 3: Cross multiply
12,230,990.75x = 16,878,778.04 × 6,724,459.28 - Step 4: Simplify right side
12,230,990.75x = 113,500,655,685,146.30 - Step 5: Solve for x
x = 113,500,655,685,146.30/12,230,990.75 - Step 6: Final answer
x = 9,279,759.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.