Finding the Fourth Proportional to 987,786.28, 1,363,145.70 and 535,079.08
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Solution
The fourth proportional to 987,786.28, 1,363,145.70 and 535,079.08 is: 738,409.47
Step by Step Solution
- Step 1: Write the proportion equation
987,786.28 : 1,363,145.70 = 535,079.08 : x - Step 2: Convert to fraction form
987,786.28/1,363,145.70 = 535,079.08/x - Step 3: Cross multiply
987,786.28x = 1,363,145.70 × 535,079.08 - Step 4: Simplify right side
987,786.28x = 729,390,747,061.96 - Step 5: Solve for x
x = 729,390,747,061.96/987,786.28 - Step 6: Final answer
x = 738,409.47
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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.