Finding the Fourth Proportional to 1,245,295,815.77, 1,718,528,642.63 and 743,548,445.02
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Solution
The fourth proportional to 1,245,295,815.77, 1,718,528,642.63 and 743,548,445.02 is: 1,026,109,044.75
Step by Step Solution
- Step 1: Write the proportion equation
1,245,295,815.77 : 1,718,528,642.63 = 743,548,445.02 : x - Step 2: Convert to fraction form
1,245,295,815.77/1,718,528,642.63 = 743,548,445.02/x - Step 3: Cross multiply
1,245,295,815.77x = 1,718,528,642.63 × 743,548,445.02 - Step 4: Simplify right side
1,245,295,815.77x = 1,277,809,299,951,123,712 - Step 5: Solve for x
x = 1,277,809,299,951,123,712/1,245,295,815.77 - Step 6: Final answer
x = 1,026,109,044.75
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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.