Finding the Fourth Proportional to 12,991,215.80, 19,486,823.70 and 3,406,575.80
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Solution
The fourth proportional to 12,991,215.80, 19,486,823.70 and 3,406,575.80 is: 5,109,863.70
Step by Step Solution
- Step 1: Write the proportion equation
12,991,215.80 : 19,486,823.70 = 3,406,575.80 : x - Step 2: Convert to fraction form
12,991,215.80/19,486,823.70 = 3,406,575.80/x - Step 3: Cross multiply
12,991,215.80x = 19,486,823.70 × 3,406,575.80 - Step 4: Simplify right side
12,991,215.80x = 66,383,342,035,286.45 - Step 5: Solve for x
x = 66,383,342,035,286.45/12,991,215.80 - Step 6: Final answer
x = 5,109,863.70
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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.