Finding the Fourth Proportional to 1,428,911.98, 2,151,921.70 and 1,301,366.14
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Solution
The fourth proportional to 1,428,911.98, 2,151,921.70 and 1,301,366.14 is: 1,959,839.43
Step by Step Solution
- Step 1: Write the proportion equation
1,428,911.98 : 2,151,921.70 = 1,301,366.14 : x - Step 2: Convert to fraction form
1,428,911.98/2,151,921.70 = 1,301,366.14/x - Step 3: Cross multiply
1,428,911.98x = 2,151,921.70 × 1,301,366.14 - Step 4: Simplify right side
1,428,911.98x = 2,800,438,036,311.24 - Step 5: Solve for x
x = 2,800,438,036,311.24/1,428,911.98 - Step 6: Final answer
x = 1,959,839.43
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.