Finding the Fourth Proportional to 1,207,377,805.26, 1,665,057,246.38 and 783,538,276.93
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Solution
The fourth proportional to 1,207,377,805.26, 1,665,057,246.38 and 783,538,276.93 is: 1,080,553,311.60
Step by Step Solution
- Step 1: Write the proportion equation
1,207,377,805.26 : 1,665,057,246.38 = 783,538,276.93 : x - Step 2: Convert to fraction form
1,207,377,805.26/1,665,057,246.38 = 783,538,276.93/x - Step 3: Cross multiply
1,207,377,805.26x = 1,665,057,246.38 × 783,538,276.93 - Step 4: Simplify right side
1,207,377,805.26x = 1,304,636,085,821,015,808 - Step 5: Solve for x
x = 1,304,636,085,821,015,808/1,207,377,805.26 - Step 6: Final answer
x = 1,080,553,311.60
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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.