Finding the Fourth Proportional to 660,163.98, 911,584.76 and 418,874.70
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Solution
The fourth proportional to 660,163.98, 911,584.76 and 418,874.70 is: 578,401.43
Step by Step Solution
- Step 1: Write the proportion equation
660,163.98 : 911,584.76 = 418,874.70 : x - Step 2: Convert to fraction form
660,163.98/911,584.76 = 418,874.70/x - Step 3: Cross multiply
660,163.98x = 911,584.76 × 418,874.70 - Step 4: Simplify right side
660,163.98x = 381,839,792,869.57 - Step 5: Solve for x
x = 381,839,792,869.57/660,163.98 - Step 6: Final answer
x = 578,401.43
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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.