Finding the Fourth Proportional to 521,529,430.20, 782,294,145.30 and 437,349,175.80
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Solution
The fourth proportional to 521,529,430.20, 782,294,145.30 and 437,349,175.80 is: 656,023,763.70
Step by Step Solution
- Step 1: Write the proportion equation
521,529,430.20 : 782,294,145.30 = 437,349,175.80 : x - Step 2: Convert to fraction form
521,529,430.20/782,294,145.30 = 437,349,175.80/x - Step 3: Cross multiply
521,529,430.20x = 782,294,145.30 × 437,349,175.80 - Step 4: Simplify right side
521,529,430.20x = 342,135,699,680,120,448 - Step 5: Solve for x
x = 342,135,699,680,120,448/521,529,430.20 - Step 6: Final answer
x = 656,023,763.70
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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.