Finding the Fourth Proportional to 2,156,929.68, 2,976,826.56 and 1,239,157.09
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Solution
The fourth proportional to 2,156,929.68, 2,976,826.56 and 1,239,157.09 is: 1,710,188.22
Step by Step Solution
- Step 1: Write the proportion equation
2,156,929.68 : 2,976,826.56 = 1,239,157.09 : x - Step 2: Convert to fraction form
2,156,929.68/2,976,826.56 = 1,239,157.09/x - Step 3: Cross multiply
2,156,929.68x = 2,976,826.56 × 1,239,157.09 - Step 4: Simplify right side
2,156,929.68x = 3,688,755,737,524.31 - Step 5: Solve for x
x = 3,688,755,737,524.31/2,156,929.68 - Step 6: Final answer
x = 1,710,188.22
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.