Finding the Fourth Proportional to 1,211,456.15, 1,671,820.71 and 667,611.45
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Solution
The fourth proportional to 1,211,456.15, 1,671,820.71 and 667,611.45 is: 921,309.99
Step by Step Solution
- Step 1: Write the proportion equation
1,211,456.15 : 1,671,820.71 = 667,611.45 : x - Step 2: Convert to fraction form
1,211,456.15/1,671,820.71 = 667,611.45/x - Step 3: Cross multiply
1,211,456.15x = 1,671,820.71 × 667,611.45 - Step 4: Simplify right side
1,211,456.15x = 1,116,126,649,594.90 - Step 5: Solve for x
x = 1,116,126,649,594.90/1,211,456.15 - Step 6: Final answer
x = 921,309.99
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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.