Finding the Fourth Proportional to 1,190,528.28, 1,642,948.88 and 646,665.12
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Solution
The fourth proportional to 1,190,528.28, 1,642,948.88 and 646,665.12 is: 892,408.65
Step by Step Solution
- Step 1: Write the proportion equation
1,190,528.28 : 1,642,948.88 = 646,665.12 : x - Step 2: Convert to fraction form
1,190,528.28/1,642,948.88 = 646,665.12/x - Step 3: Cross multiply
1,190,528.28x = 1,642,948.88 × 646,665.12 - Step 4: Simplify right side
1,190,528.28x = 1,062,437,734,639.07 - Step 5: Solve for x
x = 1,062,437,734,639.07/1,190,528.28 - Step 6: Final answer
x = 892,408.65
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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.