Finding the Fourth Proportional to 2,153,981,797.76, 2,972,731,071.72 and 1,249,936,883.84
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Solution
The fourth proportional to 2,153,981,797.76, 2,972,731,071.72 and 1,249,936,883.84 is: 1,725,049,959.17
Step by Step Solution
- Step 1: Write the proportion equation
2,153,981,797.76 : 2,972,731,071.72 = 1,249,936,883.84 : x - Step 2: Convert to fraction form
2,153,981,797.76/2,972,731,071.72 = 1,249,936,883.84/x - Step 3: Cross multiply
2,153,981,797.76x = 2,972,731,071.72 × 1,249,936,883.84 - Step 4: Simplify right side
2,153,981,797.76x = 3,715,726,212,280,039,936 - Step 5: Solve for x
x = 3,715,726,212,280,039,936/2,153,981,797.76 - Step 6: Final answer
x = 1,725,049,959.17
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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.