Finding the Fourth Proportional to 1,122,134.98, 1,548,548.00 and 638,700.12
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Solution
The fourth proportional to 1,122,134.98, 1,548,548.00 and 638,700.12 is: 881,407.15
Step by Step Solution
- Step 1: Write the proportion equation
1,122,134.98 : 1,548,548.00 = 638,700.12 : x - Step 2: Convert to fraction form
1,122,134.98/1,548,548.00 = 638,700.12/x - Step 3: Cross multiply
1,122,134.98x = 1,548,548.00 × 638,700.12 - Step 4: Simplify right side
1,122,134.98x = 989,057,795,022.51 - Step 5: Solve for x
x = 989,057,795,022.51/1,122,134.98 - Step 6: Final answer
x = 881,407.15
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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.