Finding the Fourth Proportional to 2,166,278.07, 2,989,557.18 and 1,199,408.39
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Solution
The fourth proportional to 2,166,278.07, 2,989,557.18 and 1,199,408.39 is: 1,655,235.32
Step by Step Solution
- Step 1: Write the proportion equation
2,166,278.07 : 2,989,557.18 = 1,199,408.39 : x - Step 2: Convert to fraction form
2,166,278.07/2,989,557.18 = 1,199,408.39/x - Step 3: Cross multiply
2,166,278.07x = 2,989,557.18 × 1,199,408.39 - Step 4: Simplify right side
2,166,278.07x = 3,585,699,964,076.74 - Step 5: Solve for x
x = 3,585,699,964,076.74/2,166,278.07 - Step 6: Final answer
x = 1,655,235.32
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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.