Finding the Fourth Proportional to 990,577,487.80, 1,485,866,231.70 and 560,595,791.80
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Solution
The fourth proportional to 990,577,487.80, 1,485,866,231.70 and 560,595,791.80 is: 840,893,687.70
Step by Step Solution
- Step 1: Write the proportion equation
990,577,487.80 : 1,485,866,231.70 = 560,595,791.80 : x - Step 2: Convert to fraction form
990,577,487.80/1,485,866,231.70 = 560,595,791.80/x - Step 3: Cross multiply
990,577,487.80x = 1,485,866,231.70 × 560,595,791.80 - Step 4: Simplify right side
990,577,487.80x = 832,970,356,668,743,680 - Step 5: Solve for x
x = 832,970,356,668,743,680/990,577,487.80 - Step 6: Final answer
x = 840,893,687.70
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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.