Finding the Fourth Proportional to 505,593,181.80, 758,389,772.70 and 142,087,537.80
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Solution
The fourth proportional to 505,593,181.80, 758,389,772.70 and 142,087,537.80 is: 213,131,306.70
Step by Step Solution
- Step 1: Write the proportion equation
505,593,181.80 : 758,389,772.70 = 142,087,537.80 : x - Step 2: Convert to fraction form
505,593,181.80/758,389,772.70 = 142,087,537.80/x - Step 3: Cross multiply
505,593,181.80x = 758,389,772.70 × 142,087,537.80 - Step 4: Simplify right side
505,593,181.80x = 107,757,735,495,644,672 - Step 5: Solve for x
x = 107,757,735,495,644,672/505,593,181.80 - Step 6: Final answer
x = 213,131,306.70
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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.