Finding the Fourth Proportional to 696,631,589.64, 961,135,163.82 and 395,167,216.86
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Solution
The fourth proportional to 696,631,589.64, 961,135,163.82 and 395,167,216.86 is: 545,207,988.50
Step by Step Solution
- Step 1: Write the proportion equation
696,631,589.64 : 961,135,163.82 = 395,167,216.86 : x - Step 2: Convert to fraction form
696,631,589.64/961,135,163.82 = 395,167,216.86/x - Step 3: Cross multiply
696,631,589.64x = 961,135,163.82 × 395,167,216.86 - Step 4: Simplify right side
696,631,589.64x = 379,809,107,713,029,632 - Step 5: Solve for x
x = 379,809,107,713,029,632/696,631,589.64 - Step 6: Final answer
x = 545,207,988.50
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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.