Finding the Fourth Proportional to 1,603,628.40, 2,213,009.70 and 878,460.18
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Solution
The fourth proportional to 1,603,628.40, 2,213,009.70 and 878,460.18 is: 1,212,276.42
Step by Step Solution
- Step 1: Write the proportion equation
1,603,628.40 : 2,213,009.70 = 878,460.18 : x - Step 2: Convert to fraction form
1,603,628.40/2,213,009.70 = 878,460.18/x - Step 3: Cross multiply
1,603,628.40x = 2,213,009.70 × 878,460.18 - Step 4: Simplify right side
1,603,628.40x = 1,944,040,899,403.75 - Step 5: Solve for x
x = 1,944,040,899,403.75/1,603,628.40 - Step 6: Final answer
x = 1,212,276.42
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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.