Finding the Fourth Proportional to 987,760.09, 1,363,109.07 and 535,051.09
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Solution
The fourth proportional to 987,760.09, 1,363,109.07 and 535,051.09 is: 738,370.58
Step by Step Solution
- Step 1: Write the proportion equation
987,760.09 : 1,363,109.07 = 535,051.09 : x - Step 2: Convert to fraction form
987,760.09/1,363,109.07 = 535,051.09/x - Step 3: Cross multiply
987,760.09x = 1,363,109.07 × 535,051.09 - Step 4: Simplify right side
987,760.09x = 729,332,993,692.39 - Step 5: Solve for x
x = 729,332,993,692.39/987,760.09 - Step 6: Final answer
x = 738,370.58
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1.5x scale
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.