Finding the Fourth Proportional to 3,419,380.80, 5,129,070.17 and 1,288,966.73
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Solution
The fourth proportional to 3,419,380.80, 5,129,070.17 and 1,288,966.73 is: 1,933,449.70
Step by Step Solution
- Step 1: Write the proportion equation
3,419,380.80 : 5,129,070.17 = 1,288,966.73 : x - Step 2: Convert to fraction form
3,419,380.80/5,129,070.17 = 1,288,966.73/x - Step 3: Cross multiply
3,419,380.80x = 5,129,070.17 × 1,288,966.73 - Step 4: Simplify right side
3,419,380.80x = 6,611,200,772,875.26 - Step 5: Solve for x
x = 6,611,200,772,875.26/3,419,380.80 - Step 6: Final answer
x = 1,933,449.70
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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.