Finding the Fourth Proportional to 620,612.10, 930,918.15 and 408,035.70
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Solution
The fourth proportional to 620,612.10, 930,918.15 and 408,035.70 is: 612,053.55
Step by Step Solution
- Step 1: Write the proportion equation
620,612.10 : 930,918.15 = 408,035.70 : x - Step 2: Convert to fraction form
620,612.10/930,918.15 = 408,035.70/x - Step 3: Cross multiply
620,612.10x = 930,918.15 × 408,035.70 - Step 4: Simplify right side
620,612.10x = 379,847,838,977.96 - Step 5: Solve for x
x = 379,847,838,977.96/620,612.10 - Step 6: Final answer
x = 612,053.55
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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.