Finding the Fourth Proportional to 1,211,817.99, 1,672,312.25 and 728,659.88
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Solution
The fourth proportional to 1,211,817.99, 1,672,312.25 and 728,659.88 is: 1,005,552.69
Step by Step Solution
- Step 1: Write the proportion equation
1,211,817.99 : 1,672,312.25 = 728,659.88 : x - Step 2: Convert to fraction form
1,211,817.99/1,672,312.25 = 728,659.88/x - Step 3: Cross multiply
1,211,817.99x = 1,672,312.25 × 728,659.88 - Step 4: Simplify right side
1,211,817.99x = 1,218,546,836,867.62 - Step 5: Solve for x
x = 1,218,546,836,867.62/1,211,817.99 - Step 6: Final answer
x = 1,005,552.69
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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.