Finding the Fourth Proportional to 1,603,398.70, 2,212,689.72 and 878,291.56
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Solution
The fourth proportional to 1,603,398.70, 2,212,689.72 and 878,291.56 is: 1,212,042.09
Step by Step Solution
- Step 1: Write the proportion equation
1,603,398.70 : 2,212,689.72 = 878,291.56 : x - Step 2: Convert to fraction form
1,603,398.70/2,212,689.72 = 878,291.56/x - Step 3: Cross multiply
1,603,398.70x = 2,212,689.72 × 878,291.56 - Step 4: Simplify right side
1,603,398.70x = 1,943,386,705,974.76 - Step 5: Solve for x
x = 1,943,386,705,974.76/1,603,398.70 - Step 6: Final answer
x = 1,212,042.09
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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.