Finding the Fourth Proportional to 387,981,468.30, 581,972,202.45 and 349,717,716.30
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Solution
The fourth proportional to 387,981,468.30, 581,972,202.45 and 349,717,716.30 is: 524,576,574.45
Step by Step Solution
- Step 1: Write the proportion equation
387,981,468.30 : 581,972,202.45 = 349,717,716.30 : x - Step 2: Convert to fraction form
387,981,468.30/581,972,202.45 = 349,717,716.30/x - Step 3: Cross multiply
387,981,468.30x = 581,972,202.45 × 349,717,716.30 - Step 4: Simplify right side
387,981,468.30x = 203,525,989,590,895,296 - Step 5: Solve for x
x = 203,525,989,590,895,296/387,981,468.30 - Step 6: Final answer
x = 524,576,574.45
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Similar ratio
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1.5x scale
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.