Finding the Fourth Proportional to 2,157,772.99, 2,977,712.07 and 1,190,903.26
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Solution
The fourth proportional to 2,157,772.99, 2,977,712.07 and 1,190,903.26 is: 1,643,438.41
Step by Step Solution
- Step 1: Write the proportion equation
2,157,772.99 : 2,977,712.07 = 1,190,903.26 : x - Step 2: Convert to fraction form
2,157,772.99/2,977,712.07 = 1,190,903.26/x - Step 3: Cross multiply
2,157,772.99x = 2,977,712.07 × 1,190,903.26 - Step 4: Simplify right side
2,157,772.99x = 3,546,167,011,504.35 - Step 5: Solve for x
x = 3,546,167,011,504.35/2,157,772.99 - Step 6: Final answer
x = 1,643,438.41
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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.