Finding the Fourth Proportional to 1,102,615.48, 1,521,562.21 and 643,755.48
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Solution
The fourth proportional to 1,102,615.48, 1,521,562.21 and 643,755.48 is: 888,355.03
Step by Step Solution
- Step 1: Write the proportion equation
1,102,615.48 : 1,521,562.21 = 643,755.48 : x - Step 2: Convert to fraction form
1,102,615.48/1,521,562.21 = 643,755.48/x - Step 3: Cross multiply
1,102,615.48x = 1,521,562.21 × 643,755.48 - Step 4: Simplify right side
1,102,615.48x = 979,514,010,848.41 - Step 5: Solve for x
x = 979,514,010,848.41/1,102,615.48 - Step 6: Final answer
x = 888,355.03
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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.