Finding the Fourth Proportional to 1,161,998.07, 1,603,308.56 and 678,343.70
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Solution
The fourth proportional to 1,161,998.07, 1,603,308.56 and 678,343.70 is: 935,969.07
Step by Step Solution
- Step 1: Write the proportion equation
1,161,998.07 : 1,603,308.56 = 678,343.70 : x - Step 2: Convert to fraction form
1,161,998.07/1,603,308.56 = 678,343.70/x - Step 3: Cross multiply
1,161,998.07x = 1,603,308.56 × 678,343.70 - Step 4: Simplify right side
1,161,998.07x = 1,087,594,249,423.81 - Step 5: Solve for x
x = 1,087,594,249,423.81/1,161,998.07 - Step 6: Final answer
x = 935,969.07
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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.