Finding the Fourth Proportional to 1,268,618.17, 1,748,999.45 and 1,007,838.75
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Solution
The fourth proportional to 1,268,618.17, 1,748,999.45 and 1,007,838.75 is: 1,389,471.99
Step by Step Solution
- Step 1: Write the proportion equation
1,268,618.17 : 1,748,999.45 = 1,007,838.75 : x - Step 2: Convert to fraction form
1,268,618.17/1,748,999.45 = 1,007,838.75/x - Step 3: Cross multiply
1,268,618.17x = 1,748,999.45 × 1,007,838.75 - Step 4: Simplify right side
1,268,618.17x = 1,762,709,419,438.69 - Step 5: Solve for x
x = 1,762,709,419,438.69/1,268,618.17 - Step 6: Final answer
x = 1,389,471.99
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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.