Finding the Fourth Proportional to 5,148,120.23, 7,104,406.79 and 2,856,275.45
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Solution
The fourth proportional to 5,148,120.23, 7,104,406.79 and 2,856,275.45 is: 3,941,660.61
Step by Step Solution
- Step 1: Write the proportion equation
5,148,120.23 : 7,104,406.79 = 2,856,275.45 : x - Step 2: Convert to fraction form
5,148,120.23/7,104,406.79 = 2,856,275.45/x - Step 3: Cross multiply
5,148,120.23x = 7,104,406.79 × 2,856,275.45 - Step 4: Simplify right side
5,148,120.23x = 20,292,142,701,090.31 - Step 5: Solve for x
x = 20,292,142,701,090.31/5,148,120.23 - Step 6: Final answer
x = 3,941,660.61
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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.