Finding the Fourth Proportional to 3,476,891,976.39, 5,215,370,247.68 and 989,752,817.13
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Solution
The fourth proportional to 3,476,891,976.39, 5,215,370,247.68 and 989,752,817.13 is: 1,484,638,415.59
Step by Step Solution
- Step 1: Write the proportion equation
3,476,891,976.39 : 5,215,370,247.68 = 989,752,817.13 : x - Step 2: Convert to fraction form
3,476,891,976.39/5,215,370,247.68 = 989,752,817.13/x - Step 3: Cross multiply
3,476,891,976.39x = 5,215,370,247.68 × 989,752,817.13 - Step 4: Simplify right side
3,476,891,976.39x = 5,161,927,395,012,317,184 - Step 5: Solve for x
x = 5,161,927,395,012,317,184/3,476,891,976.39 - Step 6: Final answer
x = 1,484,638,415.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.