Finding the Fourth Proportional to 679,751.64, 937,791.78 and 389,207.94
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Solution
The fourth proportional to 679,751.64, 937,791.78 and 389,207.94 is: 536,954.95
Step by Step Solution
- Step 1: Write the proportion equation
679,751.64 : 937,791.78 = 389,207.94 : x - Step 2: Convert to fraction form
679,751.64/937,791.78 = 389,207.94/x - Step 3: Cross multiply
679,751.64x = 937,791.78 × 389,207.94 - Step 4: Simplify right side
679,751.64x = 364,996,006,842.73 - Step 5: Solve for x
x = 364,996,006,842.73/679,751.64 - Step 6: Final answer
x = 536,954.95
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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.