Finding the Fourth Proportional to 611,907.70, 917,861.55 and 471,939.70
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Solution
The fourth proportional to 611,907.70, 917,861.55 and 471,939.70 is: 707,909.55
Step by Step Solution
- Step 1: Write the proportion equation
611,907.70 : 917,861.55 = 471,939.70 : x - Step 2: Convert to fraction form
611,907.70/917,861.55 = 471,939.70/x - Step 3: Cross multiply
611,907.70x = 917,861.55 × 471,939.70 - Step 4: Simplify right side
611,907.70x = 433,175,304,548.54 - Step 5: Solve for x
x = 433,175,304,548.54/611,907.70 - Step 6: Final answer
x = 707,909.55
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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.