Finding the Fourth Proportional to 1,689,542.25, 2,534,321.94 and 427,371.09
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Solution
The fourth proportional to 1,689,542.25, 2,534,321.94 and 427,371.09 is: 641,058.80
Step by Step Solution
- Step 1: Write the proportion equation
1,689,542.25 : 2,534,321.94 = 427,371.09 : x - Step 2: Convert to fraction form
1,689,542.25/2,534,321.94 = 427,371.09/x - Step 3: Cross multiply
1,689,542.25x = 2,534,321.94 × 427,371.09 - Step 4: Simplify right side
1,689,542.25x = 1,083,095,929,908.71 - Step 5: Solve for x
x = 1,083,095,929,908.71/1,689,542.25 - Step 6: Final answer
x = 641,058.80
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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.