Finding the Fourth Proportional to 1,387,828.70, 1,915,097.01 and 843,889.94
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Solution
The fourth proportional to 1,387,828.70, 1,915,097.01 and 843,889.94 is: 1,164,503.30
Step by Step Solution
- Step 1: Write the proportion equation
1,387,828.70 : 1,915,097.01 = 843,889.94 : x - Step 2: Convert to fraction form
1,387,828.70/1,915,097.01 = 843,889.94/x - Step 3: Cross multiply
1,387,828.70x = 1,915,097.01 × 843,889.94 - Step 4: Simplify right side
1,387,828.70x = 1,616,131,100,863.08 - Step 5: Solve for x
x = 1,616,131,100,863.08/1,387,828.70 - Step 6: Final answer
x = 1,164,503.30
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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.