Finding the Fourth Proportional to 2,157,770.99, 2,977,709.31 and 1,190,901.26
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Solution
The fourth proportional to 2,157,770.99, 2,977,709.31 and 1,190,901.26 is: 1,643,435.65
Step by Step Solution
- Step 1: Write the proportion equation
2,157,770.99 : 2,977,709.31 = 1,190,901.26 : x - Step 2: Convert to fraction form
2,157,770.99/2,977,709.31 = 1,190,901.26/x - Step 3: Cross multiply
2,157,770.99x = 2,977,709.31 × 1,190,901.26 - Step 4: Simplify right side
2,157,770.99x = 3,546,157,776,637.00 - Step 5: Solve for x
x = 3,546,157,776,637.00/2,157,770.99 - Step 6: Final answer
x = 1,643,435.65
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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.