Finding the Fourth Proportional to 1,392,114.24, 1,921,121.28 and 788,502.24
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Solution
The fourth proportional to 1,392,114.24, 1,921,121.28 and 788,502.24 is: 1,088,135.15
Step by Step Solution
- Step 1: Write the proportion equation
1,392,114.24 : 1,921,121.28 = 788,502.24 : x - Step 2: Convert to fraction form
1,392,114.24/1,921,121.28 = 788,502.24/x - Step 3: Cross multiply
1,392,114.24x = 1,921,121.28 × 788,502.24 - Step 4: Simplify right side
1,392,114.24x = 1,514,808,432,591.67 - Step 5: Solve for x
x = 1,514,808,432,591.67/1,392,114.24 - Step 6: Final answer
x = 1,088,135.15
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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.