Finding the Fourth Proportional to 918,623.12, 1,378,082.50 and 319,754.48
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Solution
The fourth proportional to 918,623.12, 1,378,082.50 and 319,754.48 is: 479,683.17
Step by Step Solution
- Step 1: Write the proportion equation
918,623.12 : 1,378,082.50 = 319,754.48 : x - Step 2: Convert to fraction form
918,623.12/1,378,082.50 = 319,754.48/x - Step 3: Cross multiply
918,623.12x = 1,378,082.50 × 319,754.48 - Step 4: Simplify right side
918,623.12x = 440,648,045,494.80 - Step 5: Solve for x
x = 440,648,045,494.80/918,623.12 - Step 6: Final answer
x = 479,683.17
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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.