Finding the Fourth Proportional to 1,387,476.40, 2,081,214.60 and 889,812.40
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Solution
The fourth proportional to 1,387,476.40, 2,081,214.60 and 889,812.40 is: 1,334,718.60
Step by Step Solution
- Step 1: Write the proportion equation
1,387,476.40 : 2,081,214.60 = 889,812.40 : x - Step 2: Convert to fraction form
1,387,476.40/2,081,214.60 = 889,812.40/x - Step 3: Cross multiply
1,387,476.40x = 2,081,214.60 × 889,812.40 - Step 4: Simplify right side
1,387,476.40x = 1,851,890,558,141.04 - Step 5: Solve for x
x = 1,851,890,558,141.04/1,387,476.40 - Step 6: Final answer
x = 1,334,718.60
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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.