Finding the Fourth Proportional to 916,639, 1,264,942.78 and 508,717.14
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Solution
The fourth proportional to 916,639, 1,264,942.78 and 508,717.14 is: 702,019.09
Step by Step Solution
- Step 1: Write the proportion equation
916,639 : 1,264,942.78 = 508,717.14 : x - Step 2: Convert to fraction form
916,639/1,264,942.78 = 508,717.14/x - Step 3: Cross multiply
916,639x = 1,264,942.78 × 508,717.14 - Step 4: Simplify right side
916,639x = 643,498,073,305.25 - Step 5: Solve for x
x = 643,498,073,305.25/916,639 - Step 6: Final answer
x = 702,019.09
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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.