Finding the Fourth Proportional to 639,821,633.80, 959,732,450.70 and 589,433,153.80
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Solution
The fourth proportional to 639,821,633.80, 959,732,450.70 and 589,433,153.80 is: 884,149,730.70
Step by Step Solution
- Step 1: Write the proportion equation
639,821,633.80 : 959,732,450.70 = 589,433,153.80 : x - Step 2: Convert to fraction form
639,821,633.80/959,732,450.70 = 589,433,153.80/x - Step 3: Cross multiply
639,821,633.80x = 959,732,450.70 × 589,433,153.80 - Step 4: Simplify right side
639,821,633.80x = 565,698,125,220,304,000 - Step 5: Solve for x
x = 565,698,125,220,304,000/639,821,633.80 - Step 6: Final answer
x = 884,149,730.70
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Double scale
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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.