Finding the Fourth Proportional to 5,131,579,822.70, 7,081,580,215.80 and 2,784,736,366.70
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Solution
The fourth proportional to 5,131,579,822.70, 7,081,580,215.80 and 2,784,736,366.70 is: 3,842,936,218.86
Step by Step Solution
- Step 1: Write the proportion equation
5,131,579,822.70 : 7,081,580,215.80 = 2,784,736,366.70 : x - Step 2: Convert to fraction form
5,131,579,822.70/7,081,580,215.80 = 2,784,736,366.70/x - Step 3: Cross multiply
5,131,579,822.70x = 7,081,580,215.80 × 2,784,736,366.70 - Step 4: Simplify right side
5,131,579,822.70x = 19,720,333,960,606,089,216 - Step 5: Solve for x
x = 19,720,333,960,606,089,216/5,131,579,822.70 - Step 6: Final answer
x = 3,842,936,218.86
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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.