Finding the Fourth Proportional to 5,639,459.40, 8,459,189.10 and 1,853,065.80
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Solution
The fourth proportional to 5,639,459.40, 8,459,189.10 and 1,853,065.80 is: 2,779,598.70
Step by Step Solution
- Step 1: Write the proportion equation
5,639,459.40 : 8,459,189.10 = 1,853,065.80 : x - Step 2: Convert to fraction form
5,639,459.40/8,459,189.10 = 1,853,065.80/x - Step 3: Cross multiply
5,639,459.40x = 8,459,189.10 × 1,853,065.80 - Step 4: Simplify right side
5,639,459.40x = 15,675,434,016,942.78 - Step 5: Solve for x
x = 15,675,434,016,942.78/5,639,459.40 - Step 6: Final answer
x = 2,779,598.70
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Double scale
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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.