Finding the Fourth Proportional to 1,245,295,817.39, 1,718,528,644.88 and 743,548,446.65
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Solution
The fourth proportional to 1,245,295,817.39, 1,718,528,644.88 and 743,548,446.65 is: 1,026,109,047.00
Step by Step Solution
- Step 1: Write the proportion equation
1,245,295,817.39 : 1,718,528,644.88 = 743,548,446.65 : x - Step 2: Convert to fraction form
1,245,295,817.39/1,718,528,644.88 = 743,548,446.65/x - Step 3: Cross multiply
1,245,295,817.39x = 1,718,528,644.88 × 743,548,446.65 - Step 4: Simplify right side
1,245,295,817.39x = 1,277,809,304,420,335,616 - Step 5: Solve for x
x = 1,277,809,304,420,335,616/1,245,295,817.39 - Step 6: Final answer
x = 1,026,109,047.00
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1.5x scale
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.