Finding the Fourth Proportional to 1,383,921.99, 1,909,486.98 and 840,044.25
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Solution
The fourth proportional to 1,383,921.99, 1,909,486.98 and 840,044.25 is: 1,159,063.57
Step by Step Solution
- Step 1: Write the proportion equation
1,383,921.99 : 1,909,486.98 = 840,044.25 : x - Step 2: Convert to fraction form
1,383,921.99/1,909,486.98 = 840,044.25/x - Step 3: Cross multiply
1,383,921.99x = 1,909,486.98 × 840,044.25 - Step 4: Simplify right side
1,383,921.99x = 1,604,053,557,998.87 - Step 5: Solve for x
x = 1,604,053,557,998.87/1,383,921.99 - Step 6: Final answer
x = 1,159,063.57
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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.