Finding the Fourth Proportional to 647,644.40, 971,548.08 and 347,712.80
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Solution
The fourth proportional to 647,644.40, 971,548.08 and 347,712.80 is: 521,612.95
Step by Step Solution
- Step 1: Write the proportion equation
647,644.40 : 971,548.08 = 347,712.80 : x - Step 2: Convert to fraction form
647,644.40/971,548.08 = 347,712.80/x - Step 3: Cross multiply
647,644.40x = 971,548.08 × 347,712.80 - Step 4: Simplify right side
647,644.40x = 337,819,703,231.42 - Step 5: Solve for x
x = 337,819,703,231.42/647,644.40 - Step 6: Final answer
x = 521,612.95
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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.