Finding the Fourth Proportional to 620,138.30, 930,207.45 and 441,679.10
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Solution
The fourth proportional to 620,138.30, 930,207.45 and 441,679.10 is: 662,518.65
Step by Step Solution
- Step 1: Write the proportion equation
620,138.30 : 930,207.45 = 441,679.10 : x - Step 2: Convert to fraction form
620,138.30/930,207.45 = 441,679.10/x - Step 3: Cross multiply
620,138.30x = 930,207.45 × 441,679.10 - Step 4: Simplify right side
620,138.30x = 410,853,189,329.30 - Step 5: Solve for x
x = 410,853,189,329.30/620,138.30 - Step 6: Final answer
x = 662,518.65
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Double scale
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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.