Finding the Fourth Proportional to 12,278,883.62, 18,418,312.46 and 4,191,188.06
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Solution
The fourth proportional to 12,278,883.62, 18,418,312.46 and 4,191,188.06 is: 6,286,777.66
Step by Step Solution
- Step 1: Write the proportion equation
12,278,883.62 : 18,418,312.46 = 4,191,188.06 : x - Step 2: Convert to fraction form
12,278,883.62/18,418,312.46 = 4,191,188.06/x - Step 3: Cross multiply
12,278,883.62x = 18,418,312.46 × 4,191,188.06 - Step 4: Simplify right side
12,278,883.62x = 77,194,611,267,701.23 - Step 5: Solve for x
x = 77,194,611,267,701.23/12,278,883.62 - Step 6: Final answer
x = 6,286,777.66
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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.