Finding the Fourth Proportional to 815,401.81, 1,125,817.48 and 509,615.65
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Solution
The fourth proportional to 815,401.81, 1,125,817.48 and 509,615.65 is: 703,621.45
Step by Step Solution
- Step 1: Write the proportion equation
815,401.81 : 1,125,817.48 = 509,615.65 : x - Step 2: Convert to fraction form
815,401.81/1,125,817.48 = 509,615.65/x - Step 3: Cross multiply
815,401.81x = 1,125,817.48 × 509,615.65 - Step 4: Simplify right side
815,401.81x = 573,734,208,895.85 - Step 5: Solve for x
x = 573,734,208,895.85/815,401.81 - Step 6: Final answer
x = 703,621.45
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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.