Finding the Fourth Proportional to 529,120,234.09, 730,226,768.93 and 317,434,992.85
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Solution
The fourth proportional to 529,120,234.09, 730,226,768.93 and 317,434,992.85 is: 438,084,794.80
Step by Step Solution
- Step 1: Write the proportion equation
529,120,234.09 : 730,226,768.93 = 317,434,992.85 : x - Step 2: Convert to fraction form
529,120,234.09/730,226,768.93 = 317,434,992.85/x - Step 3: Cross multiply
529,120,234.09x = 730,226,768.93 × 317,434,992.85 - Step 4: Simplify right side
529,120,234.09x = 231,799,529,174,173,152 - Step 5: Solve for x
x = 231,799,529,174,173,152/529,120,234.09 - Step 6: Final answer
x = 438,084,794.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.