Finding the Fourth Proportional to 493,803.11, 681,503.75 and 278,957.09
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Solution
The fourth proportional to 493,803.11, 681,503.75 and 278,957.09 is: 384,992.11
Step by Step Solution
- Step 1: Write the proportion equation
493,803.11 : 681,503.75 = 278,957.09 : x - Step 2: Convert to fraction form
493,803.11/681,503.75 = 278,957.09/x - Step 3: Cross multiply
493,803.11x = 681,503.75 × 278,957.09 - Step 4: Simplify right side
493,803.11x = 190,110,302,924.09 - Step 5: Solve for x
x = 190,110,302,924.09/493,803.11 - Step 6: Final answer
x = 384,992.11
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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.