Finding the Fourth Proportional to 12,409,742.31, 18,614,618.86 and 3,890,742.99
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Solution
The fourth proportional to 12,409,742.31, 18,614,618.86 and 3,890,742.99 is: 5,836,116.18
Step by Step Solution
- Step 1: Write the proportion equation
12,409,742.31 : 18,614,618.86 = 3,890,742.99 : x - Step 2: Convert to fraction form
12,409,742.31/18,614,618.86 = 3,890,742.99/x - Step 3: Cross multiply
12,409,742.31x = 18,614,618.86 × 3,890,742.99 - Step 4: Simplify right side
12,409,742.31x = 72,424,697,841,066.80 - Step 5: Solve for x
x = 72,424,697,841,066.80/12,409,742.31 - Step 6: Final answer
x = 5,836,116.18
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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.