Finding the Fourth Proportional to 647,471.20, 971,206.80 and 579,236.80
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Solution
The fourth proportional to 647,471.20, 971,206.80 and 579,236.80 is: 868,855.20
Step by Step Solution
- Step 1: Write the proportion equation
647,471.20 : 971,206.80 = 579,236.80 : x - Step 2: Convert to fraction form
647,471.20/971,206.80 = 579,236.80/x - Step 3: Cross multiply
647,471.20x = 971,206.80 × 579,236.80 - Step 4: Simplify right side
647,471.20x = 562,558,718,970.24 - Step 5: Solve for x
x = 562,558,718,970.24/647,471.20 - Step 6: Final answer
x = 868,855.20
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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.