Finding the Fourth Proportional to 1,187,545.50, 1,638,916.47 and 651,105.18
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Solution
The fourth proportional to 1,187,545.50, 1,638,916.47 and 651,105.18 is: 898,581.99
Step by Step Solution
- Step 1: Write the proportion equation
1,187,545.50 : 1,638,916.47 = 651,105.18 : x - Step 2: Convert to fraction form
1,187,545.50/1,638,916.47 = 651,105.18/x - Step 3: Cross multiply
1,187,545.50x = 1,638,916.47 × 651,105.18 - Step 4: Simplify right side
1,187,545.50x = 1,067,107,003,204.31 - Step 5: Solve for x
x = 1,067,107,003,204.31/1,187,545.50 - Step 6: Final answer
x = 898,581.99
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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.