Finding the Fourth Proportional to 1,266,284,756.97, 1,747,471,639.29 and 709,371,724.23
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Solution
The fourth proportional to 1,266,284,756.97, 1,747,471,639.29 and 709,371,724.23 is: 978,932,236.99
Step by Step Solution
- Step 1: Write the proportion equation
1,266,284,756.97 : 1,747,471,639.29 = 709,371,724.23 : x - Step 2: Convert to fraction form
1,266,284,756.97/1,747,471,639.29 = 709,371,724.23/x - Step 3: Cross multiply
1,266,284,756.97x = 1,747,471,639.29 × 709,371,724.23 - Step 4: Simplify right side
1,266,284,756.97x = 1,239,606,969,806,171,904 - Step 5: Solve for x
x = 1,239,606,969,806,171,904/1,266,284,756.97 - Step 6: Final answer
x = 978,932,236.99
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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.