Finding the Fourth Proportional to 1,278,498,780.02, 1,917,834,775.27 and 449,351,617.70
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Solution
The fourth proportional to 1,278,498,780.02, 1,917,834,775.27 and 449,351,617.70 is: 674,057,865.54
Step by Step Solution
- Step 1: Write the proportion equation
1,278,498,780.02 : 1,917,834,775.27 = 449,351,617.70 : x - Step 2: Convert to fraction form
1,278,498,780.02/1,917,834,775.27 = 449,351,617.70/x - Step 3: Cross multiply
1,278,498,780.02x = 1,917,834,775.27 × 449,351,617.70 - Step 4: Simplify right side
1,278,498,780.02x = 861,782,158,752,561,664 - Step 5: Solve for x
x = 861,782,158,752,561,664/1,278,498,780.02 - Step 6: Final answer
x = 674,057,865.54
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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.