Finding the Fourth Proportional to 1,405,064.97, 1,939,036.70 and 861,095.67
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Solution
The fourth proportional to 1,405,064.97, 1,939,036.70 and 861,095.67 is: 1,188,340.85
Step by Step Solution
- Step 1: Write the proportion equation
1,405,064.97 : 1,939,036.70 = 861,095.67 : x - Step 2: Convert to fraction form
1,405,064.97/1,939,036.70 = 861,095.67/x - Step 3: Cross multiply
1,405,064.97x = 1,939,036.70 × 861,095.67 - Step 4: Simplify right side
1,405,064.97x = 1,669,696,102,035.61 - Step 5: Solve for x
x = 1,669,696,102,035.61/1,405,064.97 - Step 6: Final answer
x = 1,188,340.85
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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.