Finding the Fourth Proportional to 647,471.80, 971,207.70 and 643,324.60
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Solution
The fourth proportional to 647,471.80, 971,207.70 and 643,324.60 is: 964,986.90
Step by Step Solution
- Step 1: Write the proportion equation
647,471.80 : 971,207.70 = 643,324.60 : x - Step 2: Convert to fraction form
647,471.80/971,207.70 = 643,324.60/x - Step 3: Cross multiply
647,471.80x = 971,207.70 × 643,324.60 - Step 4: Simplify right side
647,471.80x = 624,801,805,119.42 - Step 5: Solve for x
x = 624,801,805,119.42/647,471.80 - Step 6: Final answer
x = 964,986.90
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1.5x scale
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.