Finding the Fourth Proportional to 1,161,920.63, 1,603,498.68 and 645,672.60
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Solution
The fourth proportional to 1,161,920.63, 1,603,498.68 and 645,672.60 is: 891,054.98
Step by Step Solution
- Step 1: Write the proportion equation
1,161,920.63 : 1,603,498.68 = 645,672.60 : x - Step 2: Convert to fraction form
1,161,920.63/1,603,498.68 = 645,672.60/x - Step 3: Cross multiply
1,161,920.63x = 1,603,498.68 × 645,672.60 - Step 4: Simplify right side
1,161,920.63x = 1,035,335,161,812.17 - Step 5: Solve for x
x = 1,035,335,161,812.17/1,161,920.63 - Step 6: Final answer
x = 891,054.98
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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.