Finding the Fourth Proportional to 5,321,805.70, 7,982,708.55 and 4,258,923.70
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Solution
The fourth proportional to 5,321,805.70, 7,982,708.55 and 4,258,923.70 is: 6,388,385.55
Step by Step Solution
- Step 1: Write the proportion equation
5,321,805.70 : 7,982,708.55 = 4,258,923.70 : x - Step 2: Convert to fraction form
5,321,805.70/7,982,708.55 = 4,258,923.70/x - Step 3: Cross multiply
5,321,805.70x = 7,982,708.55 × 4,258,923.70 - Step 4: Simplify right side
5,321,805.70x = 33,997,746,633,787.64 - Step 5: Solve for x
x = 33,997,746,633,787.64/5,321,805.70 - Step 6: Final answer
x = 6,388,385.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.