Finding the Fourth Proportional to 1,269,916,436.70, 1,752,425,458.20 and 705,437,905.14
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Solution
The fourth proportional to 1,269,916,436.70, 1,752,425,458.20 and 705,437,905.14 is: 973,471,409.94
Step by Step Solution
- Step 1: Write the proportion equation
1,269,916,436.70 : 1,752,425,458.20 = 705,437,905.14 : x - Step 2: Convert to fraction form
1,269,916,436.70/1,752,425,458.20 = 705,437,905.14/x - Step 3: Cross multiply
1,269,916,436.70x = 1,752,425,458.20 × 705,437,905.14 - Step 4: Simplify right side
1,269,916,436.70x = 1,236,227,344,146,612,736 - Step 5: Solve for x
x = 1,236,227,344,146,612,736/1,269,916,436.70 - Step 6: Final answer
x = 973,471,409.94
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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.