Finding the Fourth Proportional to 434,554,307.40, 651,831,461.10 and 386,937,193.80
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Solution
The fourth proportional to 434,554,307.40, 651,831,461.10 and 386,937,193.80 is: 580,405,790.70
Step by Step Solution
- Step 1: Write the proportion equation
434,554,307.40 : 651,831,461.10 = 386,937,193.80 : x - Step 2: Convert to fraction form
434,554,307.40/651,831,461.10 = 386,937,193.80/x - Step 3: Cross multiply
434,554,307.40x = 651,831,461.10 × 386,937,193.80 - Step 4: Simplify right side
434,554,307.40x = 252,217,836,388,587,872 - Step 5: Solve for x
x = 252,217,836,388,587,872/434,554,307.40 - Step 6: Final answer
x = 580,405,790.70
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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.