Finding the Fourth Proportional to 378,977,135.80, 568,465,703.70 and 217,733,999.80
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Solution
The fourth proportional to 378,977,135.80, 568,465,703.70 and 217,733,999.80 is: 326,600,999.70
Step by Step Solution
- Step 1: Write the proportion equation
378,977,135.80 : 568,465,703.70 = 217,733,999.80 : x - Step 2: Convert to fraction form
378,977,135.80/568,465,703.70 = 217,733,999.80/x - Step 3: Cross multiply
378,977,135.80x = 568,465,703.70 × 217,733,999.80 - Step 4: Simplify right side
378,977,135.80x = 123,774,311,415,722,672 - Step 5: Solve for x
x = 123,774,311,415,722,672/378,977,135.80 - Step 6: Final answer
x = 326,600,999.70
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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.