Finding the Fourth Proportional to 1,146,142.19, 1,581,611.85 and 687,026.99
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Solution
The fourth proportional to 1,146,142.19, 1,581,611.85 and 687,026.99 is: 948,058.66
Step by Step Solution
- Step 1: Write the proportion equation
1,146,142.19 : 1,581,611.85 = 687,026.99 : x - Step 2: Convert to fraction form
1,146,142.19/1,581,611.85 = 687,026.99/x - Step 3: Cross multiply
1,146,142.19x = 1,581,611.85 × 687,026.99 - Step 4: Simplify right side
1,146,142.19x = 1,086,610,020,745.77 - Step 5: Solve for x
x = 1,086,610,020,745.77/1,146,142.19 - Step 6: Final answer
x = 948,058.66
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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.