Finding the Fourth Proportional to 1,122,135.48, 1,548,548.70 and 638,700.62
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Solution
The fourth proportional to 1,122,135.48, 1,548,548.70 and 638,700.62 is: 881,407.84
Step by Step Solution
- Step 1: Write the proportion equation
1,122,135.48 : 1,548,548.70 = 638,700.62 : x - Step 2: Convert to fraction form
1,122,135.48/1,548,548.70 = 638,700.62/x - Step 3: Cross multiply
1,122,135.48x = 1,548,548.70 × 638,700.62 - Step 4: Simplify right side
1,122,135.48x = 989,059,011,596.69 - Step 5: Solve for x
x = 989,059,011,596.69/1,122,135.48 - Step 6: Final answer
x = 881,407.84
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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.