Finding the Fourth Proportional to 1,245,366,677.98, 1,718,613,787.90 and 680,852,775.95
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Solution
The fourth proportional to 1,245,366,677.98, 1,718,613,787.90 and 680,852,775.95 is: 939,581,079.99
Step by Step Solution
- Step 1: Write the proportion equation
1,245,366,677.98 : 1,718,613,787.90 = 680,852,775.95 : x - Step 2: Convert to fraction form
1,245,366,677.98/1,718,613,787.90 = 680,852,775.95/x - Step 3: Cross multiply
1,245,366,677.98x = 1,718,613,787.90 × 680,852,775.95 - Step 4: Simplify right side
1,245,366,677.98x = 1,170,122,968,277,659,648 - Step 5: Solve for x
x = 1,170,122,968,277,659,648/1,245,366,677.98 - Step 6: Final answer
x = 939,581,079.99
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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.