Finding the Fourth Proportional to 1,257,408.01, 1,886,112.63 and 415,959.76
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Solution
The fourth proportional to 1,257,408.01, 1,886,112.63 and 415,959.76 is: 623,939.84
Step by Step Solution
- Step 1: Write the proportion equation
1,257,408.01 : 1,886,112.63 = 415,959.76 : x - Step 2: Convert to fraction form
1,257,408.01/1,886,112.63 = 415,959.76/x - Step 3: Cross multiply
1,257,408.01x = 1,886,112.63 × 415,959.76 - Step 4: Simplify right side
1,257,408.01x = 784,546,956,907.77 - Step 5: Solve for x
x = 784,546,956,907.77/1,257,408.01 - Step 6: Final answer
x = 623,939.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.