Finding the Fourth Proportional to 489,990.79, 674,623.14 and 418,082.23
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Solution
The fourth proportional to 489,990.79, 674,623.14 and 418,082.23 is: 575,618.87
Step by Step Solution
- Step 1: Write the proportion equation
489,990.79 : 674,623.14 = 418,082.23 : x - Step 2: Convert to fraction form
489,990.79/674,623.14 = 418,082.23/x - Step 3: Cross multiply
489,990.79x = 674,623.14 × 418,082.23 - Step 4: Simplify right side
489,990.79x = 282,047,945,094.24 - Step 5: Solve for x
x = 282,047,945,094.24/489,990.79 - Step 6: Final answer
x = 575,618.87
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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.