Finding the Fourth Proportional to 620,636.10, 930,954.15 and 408,059.70
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Solution
The fourth proportional to 620,636.10, 930,954.15 and 408,059.70 is: 612,089.55
Step by Step Solution
- Step 1: Write the proportion equation
620,636.10 : 930,954.15 = 408,059.70 : x - Step 2: Convert to fraction form
620,636.10/930,954.15 = 408,059.70/x - Step 3: Cross multiply
620,636.10x = 930,954.15 × 408,059.70 - Step 4: Simplify right side
620,636.10x = 379,884,871,162.76 - Step 5: Solve for x
x = 379,884,871,162.76/620,636.10 - Step 6: Final answer
x = 612,089.55
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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.