Finding the Fourth Proportional to 1,192,639.68, 1,645,959.20 and 890,308.80
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Solution
The fourth proportional to 1,192,639.68, 1,645,959.20 and 890,308.80 is: 1,228,713.07
Step by Step Solution
- Step 1: Write the proportion equation
1,192,639.68 : 1,645,959.20 = 890,308.80 : x - Step 2: Convert to fraction form
1,192,639.68/1,645,959.20 = 890,308.80/x - Step 3: Cross multiply
1,192,639.68x = 1,645,959.20 × 890,308.80 - Step 4: Simplify right side
1,192,639.68x = 1,465,411,960,200.96 - Step 5: Solve for x
x = 1,465,411,960,200.96/1,192,639.68 - Step 6: Final answer
x = 1,228,713.07
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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.