Finding the Fourth Proportional to 728,874.81, 1,005,853.79 and 402,202.35
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Solution
The fourth proportional to 728,874.81, 1,005,853.79 and 402,202.35 is: 555,042.86
Step by Step Solution
- Step 1: Write the proportion equation
728,874.81 : 1,005,853.79 = 402,202.35 : x - Step 2: Convert to fraction form
728,874.81/1,005,853.79 = 402,202.35/x - Step 3: Cross multiply
728,874.81x = 1,005,853.79 × 402,202.35 - Step 4: Simplify right side
728,874.81x = 404,556,756,083.40 - Step 5: Solve for x
x = 404,556,756,083.40/728,874.81 - Step 6: Final answer
x = 555,042.86
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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.