Finding the Fourth Proportional to 1,276,793,557.68, 1,761,974,313.75 and 690,082,693.68
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Solution
The fourth proportional to 1,276,793,557.68, 1,761,974,313.75 and 690,082,693.68 is: 952,313,687.14
Step by Step Solution
- Step 1: Write the proportion equation
1,276,793,557.68 : 1,761,974,313.75 = 690,082,693.68 : x - Step 2: Convert to fraction form
1,276,793,557.68/1,761,974,313.75 = 690,082,693.68/x - Step 3: Cross multiply
1,276,793,557.68x = 1,761,974,313.75 × 690,082,693.68 - Step 4: Simplify right side
1,276,793,557.68x = 1,215,907,980,627,569,408 - Step 5: Solve for x
x = 1,215,907,980,627,569,408/1,276,793,557.68 - Step 6: Final answer
x = 952,313,687.14
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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.