Finding the Fourth Proportional to 1,171,448,528.77, 1,616,594,534.85 and 642,821,361.31
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Solution
The fourth proportional to 1,171,448,528.77, 1,616,594,534.85 and 642,821,361.31 is: 887,091,045.02
Step by Step Solution
- Step 1: Write the proportion equation
1,171,448,528.77 : 1,616,594,534.85 = 642,821,361.31 : x - Step 2: Convert to fraction form
1,171,448,528.77/1,616,594,534.85 = 642,821,361.31/x - Step 3: Cross multiply
1,171,448,528.77x = 1,616,594,534.85 × 642,821,361.31 - Step 4: Simplify right side
1,171,448,528.77x = 1,039,181,499,578,583,040 - Step 5: Solve for x
x = 1,039,181,499,578,583,040/1,171,448,528.77 - Step 6: Final answer
x = 887,091,045.02
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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.