Finding the Fourth Proportional to 470,521.12, 649,396.56 and 343,616.80
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Solution
The fourth proportional to 470,521.12, 649,396.56 and 343,616.80 is: 474,247.72
Step by Step Solution
- Step 1: Write the proportion equation
470,521.12 : 649,396.56 = 343,616.80 : x - Step 2: Convert to fraction form
470,521.12/649,396.56 = 343,616.80/x - Step 3: Cross multiply
470,521.12x = 649,396.56 × 343,616.80 - Step 4: Simplify right side
470,521.12x = 223,143,567,878.21 - Step 5: Solve for x
x = 223,143,567,878.21/470,521.12 - Step 6: Final answer
x = 474,247.72
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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.