Finding the Fourth Proportional to 881,753.20, 1,215,660.36 and 636,531.28
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Solution
The fourth proportional to 881,753.20, 1,215,660.36 and 636,531.28 is: 877,576.45
Step by Step Solution
- Step 1: Write the proportion equation
881,753.20 : 1,215,660.36 = 636,531.28 : x - Step 2: Convert to fraction form
881,753.20/1,215,660.36 = 636,531.28/x - Step 3: Cross multiply
881,753.20x = 1,215,660.36 × 636,531.28 - Step 4: Simplify right side
881,753.20x = 773,805,844,996.06 - Step 5: Solve for x
x = 773,805,844,996.06/881,753.20 - Step 6: Final answer
x = 877,576.45
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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.