Finding the Fourth Proportional to 1,101,998.17, 1,652,354.79 and 427,291.21
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Solution
The fourth proportional to 1,101,998.17, 1,652,354.79 and 427,291.21 is: 640,687.70
Step by Step Solution
- Step 1: Write the proportion equation
1,101,998.17 : 1,652,354.79 = 427,291.21 : x - Step 2: Convert to fraction form
1,101,998.17/1,652,354.79 = 427,291.21/x - Step 3: Cross multiply
1,101,998.17x = 1,652,354.79 × 427,291.21 - Step 4: Simplify right side
1,101,998.17x = 706,036,677,568.40 - Step 5: Solve for x
x = 706,036,677,568.40/1,101,998.17 - Step 6: Final answer
x = 640,687.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.