Finding the Fourth Proportional to 1,121,847.06, 1,548,129.42 and 638,402.16
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Solution
The fourth proportional to 1,121,847.06, 1,548,129.42 and 638,402.16 is: 880,983.87
Step by Step Solution
- Step 1: Write the proportion equation
1,121,847.06 : 1,548,129.42 = 638,402.16 : x - Step 2: Convert to fraction form
1,121,847.06/1,548,129.42 = 638,402.16/x - Step 3: Cross multiply
1,121,847.06x = 1,548,129.42 × 638,402.16 - Step 4: Simplify right side
1,121,847.06x = 988,329,165,687.55 - Step 5: Solve for x
x = 988,329,165,687.55/1,121,847.06 - Step 6: Final answer
x = 880,983.87
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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.