Finding the Fourth Proportional to 1,422,560.31, 1,963,161.87 and 778,021.94
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Solution
The fourth proportional to 1,422,560.31, 1,963,161.87 and 778,021.94 is: 1,073,685.95
Step by Step Solution
- Step 1: Write the proportion equation
1,422,560.31 : 1,963,161.87 = 778,021.94 : x - Step 2: Convert to fraction form
1,422,560.31/1,963,161.87 = 778,021.94/x - Step 3: Cross multiply
1,422,560.31x = 1,963,161.87 × 778,021.94 - Step 4: Simplify right side
1,422,560.31x = 1,527,383,008,621.75 - Step 5: Solve for x
x = 1,527,383,008,621.75/1,422,560.31 - Step 6: Final answer
x = 1,073,685.95
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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.