Finding the Fourth Proportional to 1,278,498,784.64, 1,917,834,782.16 and 449,351,622.32
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Solution
The fourth proportional to 1,278,498,784.64, 1,917,834,782.16 and 449,351,622.32 is: 674,057,872.45
Step by Step Solution
- Step 1: Write the proportion equation
1,278,498,784.64 : 1,917,834,782.16 = 449,351,622.32 : x - Step 2: Convert to fraction form
1,278,498,784.64/1,917,834,782.16 = 449,351,622.32/x - Step 3: Cross multiply
1,278,498,784.64x = 1,917,834,782.16 × 449,351,622.32 - Step 4: Simplify right side
1,278,498,784.64x = 861,782,170,705,319,808 - Step 5: Solve for x
x = 861,782,170,705,319,808/1,278,498,784.64 - Step 6: Final answer
x = 674,057,872.45
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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.