Finding the Fourth Proportional to 620,604.10, 930,906.15 and 408,027.70
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Solution
The fourth proportional to 620,604.10, 930,906.15 and 408,027.70 is: 612,041.55
Step by Step Solution
- Step 1: Write the proportion equation
620,604.10 : 930,906.15 = 408,027.70 : x - Step 2: Convert to fraction form
620,604.10/930,906.15 = 408,027.70/x - Step 3: Cross multiply
620,604.10x = 930,906.15 × 408,027.70 - Step 4: Simplify right side
620,604.10x = 379,835,495,300.36 - Step 5: Solve for x
x = 379,835,495,300.36/620,604.10 - Step 6: Final answer
x = 612,041.55
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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.