Finding the Fourth Proportional to 1,122,160.24, 1,548,591 and 638,756.48
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Solution
The fourth proportional to 1,122,160.24, 1,548,591 and 638,756.48 is: 881,489.56
Step by Step Solution
- Step 1: Write the proportion equation
1,122,160.24 : 1,548,591 = 638,756.48 : x - Step 2: Convert to fraction form
1,122,160.24/1,548,591 = 638,756.48/x - Step 3: Cross multiply
1,122,160.24x = 1,548,591 × 638,756.48 - Step 4: Simplify right side
1,122,160.24x = 989,172,536,119.68 - Step 5: Solve for x
x = 989,172,536,119.68/1,122,160.24 - Step 6: Final answer
x = 881,489.56
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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.