Finding the Fourth Proportional to 2,157,687.68, 2,977,606.84 and 1,190,818.48
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Solution
The fourth proportional to 2,157,687.68, 2,977,606.84 and 1,190,818.48 is: 1,643,328.31
Step by Step Solution
- Step 1: Write the proportion equation
2,157,687.68 : 2,977,606.84 = 1,190,818.48 : x - Step 2: Convert to fraction form
2,157,687.68/2,977,606.84 = 1,190,818.48/x - Step 3: Cross multiply
2,157,687.68x = 2,977,606.84 × 1,190,818.48 - Step 4: Simplify right side
2,157,687.68x = 3,545,789,251,246.40 - Step 5: Solve for x
x = 3,545,789,251,246.40/2,157,687.68 - Step 6: Final answer
x = 1,643,328.31
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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.