Finding the Fourth Proportional to 1,276,793,722.80, 1,761,974,541.36 and 690,082,858.80
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Solution
The fourth proportional to 1,276,793,722.80, 1,761,974,541.36 and 690,082,858.80 is: 952,313,914.86
Step by Step Solution
- Step 1: Write the proportion equation
1,276,793,722.80 : 1,761,974,541.36 = 690,082,858.80 : x - Step 2: Convert to fraction form
1,276,793,722.80/1,761,974,541.36 = 690,082,858.80/x - Step 3: Cross multiply
1,276,793,722.80x = 1,761,974,541.36 × 690,082,858.80 - Step 4: Simplify right side
1,276,793,722.80x = 1,215,908,428,634,527,488 - Step 5: Solve for x
x = 1,215,908,428,634,527,488/1,276,793,722.80 - Step 6: Final answer
x = 952,313,914.86
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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.