Finding the Fourth Proportional to 920,193.74, 1,379,823.63 and 421,130.06
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Solution
The fourth proportional to 920,193.74, 1,379,823.63 and 421,130.06 is: 631,481.37
Step by Step Solution
- Step 1: Write the proportion equation
920,193.74 : 1,379,823.63 = 421,130.06 : x - Step 2: Convert to fraction form
920,193.74/1,379,823.63 = 421,130.06/x - Step 3: Cross multiply
920,193.74x = 1,379,823.63 × 421,130.06 - Step 4: Simplify right side
920,193.74x = 581,085,208,091.32 - Step 5: Solve for x
x = 581,085,208,091.32/920,193.74 - Step 6: Final answer
x = 631,481.37
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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.