Finding the Fourth Proportional to 484,404,643.80, 726,606,965.70 and 398,311,201.80
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Solution
The fourth proportional to 484,404,643.80, 726,606,965.70 and 398,311,201.80 is: 597,466,802.70
Step by Step Solution
- Step 1: Write the proportion equation
484,404,643.80 : 726,606,965.70 = 398,311,201.80 : x - Step 2: Convert to fraction form
484,404,643.80/726,606,965.70 = 398,311,201.80/x - Step 3: Cross multiply
484,404,643.80x = 726,606,965.70 × 398,311,201.80 - Step 4: Simplify right side
484,404,643.80x = 289,415,693,744,218,432 - Step 5: Solve for x
x = 289,415,693,744,218,432/484,404,643.80 - Step 6: Final answer
x = 597,466,802.70
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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.