Finding the Fourth Proportional to 1,393,807.08, 1,923,220.62 and 820,961.31
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Solution
The fourth proportional to 1,393,807.08, 1,923,220.62 and 820,961.31 is: 1,132,789.28
Step by Step Solution
- Step 1: Write the proportion equation
1,393,807.08 : 1,923,220.62 = 820,961.31 : x - Step 2: Convert to fraction form
1,393,807.08/1,923,220.62 = 820,961.31/x - Step 3: Cross multiply
1,393,807.08x = 1,923,220.62 × 820,961.31 - Step 4: Simplify right side
1,393,807.08x = 1,578,889,719,614.21 - Step 5: Solve for x
x = 1,578,889,719,614.21/1,393,807.08 - Step 6: Final answer
x = 1,132,789.28
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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.