Finding the Fourth Proportional to 1,543,649.80, 2,129,557.62 and 931,461.40
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Solution
The fourth proportional to 1,543,649.80, 2,129,557.62 and 931,461.40 is: 1,285,006.95
Step by Step Solution
- Step 1: Write the proportion equation
1,543,649.80 : 2,129,557.62 = 931,461.40 : x - Step 2: Convert to fraction form
1,543,649.80/2,129,557.62 = 931,461.40/x - Step 3: Cross multiply
1,543,649.80x = 2,129,557.62 × 931,461.40 - Step 4: Simplify right side
1,543,649.80x = 1,983,600,722,105.87 - Step 5: Solve for x
x = 1,983,600,722,105.87/1,543,649.80 - Step 6: Final answer
x = 1,285,006.95
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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.