Finding the Fourth Proportional to 6,439,638.20, 9,660,623.70 and 3,236,703.80
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Solution
The fourth proportional to 6,439,638.20, 9,660,623.70 and 3,236,703.80 is: 4,855,641.96
Step by Step Solution
- Step 1: Write the proportion equation
6,439,638.20 : 9,660,623.70 = 3,236,703.80 : x - Step 2: Convert to fraction form
6,439,638.20/9,660,623.70 = 3,236,703.80/x - Step 3: Cross multiply
6,439,638.20x = 9,660,623.70 × 3,236,703.80 - Step 4: Simplify right side
6,439,638.20x = 31,268,577,440,160.05 - Step 5: Solve for x
x = 31,268,577,440,160.05/6,439,638.20 - Step 6: Final answer
x = 4,855,641.96
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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.