Finding the Fourth Proportional to 1,205,479.09, 1,808,218.62 and 939,438.64
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Solution
The fourth proportional to 1,205,479.09, 1,808,218.62 and 939,438.64 is: 1,409,157.95
Step by Step Solution
- Step 1: Write the proportion equation
1,205,479.09 : 1,808,218.62 = 939,438.64 : x - Step 2: Convert to fraction form
1,205,479.09/1,808,218.62 = 939,438.64/x - Step 3: Cross multiply
1,205,479.09x = 1,808,218.62 × 939,438.64 - Step 4: Simplify right side
1,205,479.09x = 1,698,710,441,195.48 - Step 5: Solve for x
x = 1,698,710,441,195.48/1,205,479.09 - Step 6: Final answer
x = 1,409,157.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.