Finding the Fourth Proportional to 1,072,087.12, 1,478,921.79 and 868,368.07
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Solution
The fourth proportional to 1,072,087.12, 1,478,921.79 and 868,368.07 is: 1,197,895.62
Step by Step Solution
- Step 1: Write the proportion equation
1,072,087.12 : 1,478,921.79 = 868,368.07 : x - Step 2: Convert to fraction form
1,072,087.12/1,478,921.79 = 868,368.07/x - Step 3: Cross multiply
1,072,087.12x = 1,478,921.79 × 868,368.07 - Step 4: Simplify right side
1,072,087.12x = 1,284,248,460,463.25 - Step 5: Solve for x
x = 1,284,248,460,463.25/1,072,087.12 - Step 6: Final answer
x = 1,197,895.62
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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.