Finding the Fourth Proportional to 1,264,619,907.05, 1,745,358,107.05 and 728,668,963.83
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Solution
The fourth proportional to 1,264,619,907.05, 1,745,358,107.05 and 728,668,963.83 is: 1,005,668,403.84
Step by Step Solution
- Step 1: Write the proportion equation
1,264,619,907.05 : 1,745,358,107.05 = 728,668,963.83 : x - Step 2: Convert to fraction form
1,264,619,907.05/1,745,358,107.05 = 728,668,963.83/x - Step 3: Cross multiply
1,264,619,907.05x = 1,745,358,107.05 × 728,668,963.83 - Step 4: Simplify right side
1,264,619,907.05x = 1,271,788,283,383,850,752 - Step 5: Solve for x
x = 1,271,788,283,383,850,752/1,264,619,907.05 - Step 6: Final answer
x = 1,005,668,403.84
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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.