Finding the Fourth Proportional to 1,128,626.26, 1,558,040.06 and 715,369.52
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Solution
The fourth proportional to 1,128,626.26, 1,558,040.06 and 715,369.52 is: 987,549.57
Step by Step Solution
- Step 1: Write the proportion equation
1,128,626.26 : 1,558,040.06 = 715,369.52 : x - Step 2: Convert to fraction form
1,128,626.26/1,558,040.06 = 715,369.52/x - Step 3: Cross multiply
1,128,626.26x = 1,558,040.06 × 715,369.52 - Step 4: Simplify right side
1,128,626.26x = 1,114,574,375,546.50 - Step 5: Solve for x
x = 1,114,574,375,546.50/1,128,626.26 - Step 6: Final answer
x = 987,549.57
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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.