Finding the Fourth Proportional to 621,908.48, 932,808.96 and 378,686.75
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Solution
The fourth proportional to 621,908.48, 932,808.96 and 378,686.75 is: 567,997.38
Step by Step Solution
- Step 1: Write the proportion equation
621,908.48 : 932,808.96 = 378,686.75 : x - Step 2: Convert to fraction form
621,908.48/932,808.96 = 378,686.75/x - Step 3: Cross multiply
621,908.48x = 932,808.96 × 378,686.75 - Step 4: Simplify right side
621,908.48x = 353,242,388,769.24 - Step 5: Solve for x
x = 353,242,388,769.24/621,908.48 - Step 6: Final answer
x = 567,997.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.