Finding the Fourth Proportional to 1,225,864,251.48, 1,691,728,393.32 and 668,983,168.92
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Solution
The fourth proportional to 1,225,864,251.48, 1,691,728,393.32 and 668,983,168.92 is: 923,216,269.79
Step by Step Solution
- Step 1: Write the proportion equation
1,225,864,251.48 : 1,691,728,393.32 = 668,983,168.92 : x - Step 2: Convert to fraction form
1,225,864,251.48/1,691,728,393.32 = 668,983,168.92/x - Step 3: Cross multiply
1,225,864,251.48x = 1,691,728,393.32 × 668,983,168.92 - Step 4: Simplify right side
1,225,864,251.48x = 1,131,737,821,515,153,664 - Step 5: Solve for x
x = 1,131,737,821,515,153,664/1,225,864,251.48 - Step 6: Final answer
x = 923,216,269.79
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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.