Finding the Fourth Proportional to 621,108.54, 857,022.84 and 349,138.62
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Solution
The fourth proportional to 621,108.54, 857,022.84 and 349,138.62 is: 481,751.18
Step by Step Solution
- Step 1: Write the proportion equation
621,108.54 : 857,022.84 = 349,138.62 : x - Step 2: Convert to fraction form
621,108.54/857,022.84 = 349,138.62/x - Step 3: Cross multiply
621,108.54x = 857,022.84 × 349,138.62 - Step 4: Simplify right side
621,108.54x = 299,219,771,666.08 - Step 5: Solve for x
x = 299,219,771,666.08/621,108.54 - Step 6: Final answer
x = 481,751.18
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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.