Finding the Fourth Proportional to 2,130,912.96, 2,940,749.28 and 1,225,495.68
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Solution
The fourth proportional to 2,130,912.96, 2,940,749.28 and 1,225,495.68 is: 1,691,235.45
Step by Step Solution
- Step 1: Write the proportion equation
2,130,912.96 : 2,940,749.28 = 1,225,495.68 : x - Step 2: Convert to fraction form
2,130,912.96/2,940,749.28 = 1,225,495.68/x - Step 3: Cross multiply
2,130,912.96x = 2,940,749.28 × 1,225,495.68 - Step 4: Simplify right side
2,130,912.96x = 3,603,875,538,603.11 - Step 5: Solve for x
x = 3,603,875,538,603.11/2,130,912.96 - Step 6: Final answer
x = 1,691,235.45
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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.