Finding the Fourth Proportional to 434,423,321.40, 651,634,982.10 and 386,806,207.80
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Solution
The fourth proportional to 434,423,321.40, 651,634,982.10 and 386,806,207.80 is: 580,209,311.70
Step by Step Solution
- Step 1: Write the proportion equation
434,423,321.40 : 651,634,982.10 = 386,806,207.80 : x - Step 2: Convert to fraction form
434,423,321.40/651,634,982.10 = 386,806,207.80/x - Step 3: Cross multiply
434,423,321.40x = 651,634,982.10 × 386,806,207.80 - Step 4: Simplify right side
434,423,321.40x = 252,056,456,295,921,888 - Step 5: Solve for x
x = 252,056,456,295,921,888/434,423,321.40 - Step 6: Final answer
x = 580,209,311.70
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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.