Finding the Fourth Proportional to 12,146,511.80, 18,219,767.70 and 4,955,655.80
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Solution
The fourth proportional to 12,146,511.80, 18,219,767.70 and 4,955,655.80 is: 7,433,483.70
Step by Step Solution
- Step 1: Write the proportion equation
12,146,511.80 : 18,219,767.70 = 4,955,655.80 : x - Step 2: Convert to fraction form
12,146,511.80/18,219,767.70 = 4,955,655.80/x - Step 3: Cross multiply
12,146,511.80x = 18,219,767.70 × 4,955,655.80 - Step 4: Simplify right side
12,146,511.80x = 90,290,897,477,157.66 - Step 5: Solve for x
x = 90,290,897,477,157.66/12,146,511.80 - Step 6: Final answer
x = 7,433,483.70
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Similar ratio
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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.