Finding the Fourth Proportional to 1,442,208.80, 1,990,167.36 and 788,705.84
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Solution
The fourth proportional to 1,442,208.80, 1,990,167.36 and 788,705.84 is: 1,088,369.88
Step by Step Solution
- Step 1: Write the proportion equation
1,442,208.80 : 1,990,167.36 = 788,705.84 : x - Step 2: Convert to fraction form
1,442,208.80/1,990,167.36 = 788,705.84/x - Step 3: Cross multiply
1,442,208.80x = 1,990,167.36 × 788,705.84 - Step 4: Simplify right side
1,442,208.80x = 1,569,656,619,409.38 - Step 5: Solve for x
x = 1,569,656,619,409.38/1,442,208.80 - Step 6: Final answer
x = 1,088,369.88
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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.