Finding the Fourth Proportional to 680,927.80, 1,021,391.70 and 349,151.80
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Solution
The fourth proportional to 680,927.80, 1,021,391.70 and 349,151.80 is: 523,727.70
Step by Step Solution
- Step 1: Write the proportion equation
680,927.80 : 1,021,391.70 = 349,151.80 : x - Step 2: Convert to fraction form
680,927.80/1,021,391.70 = 349,151.80/x - Step 3: Cross multiply
680,927.80x = 1,021,391.70 × 349,151.80 - Step 4: Simplify right side
680,927.80x = 356,620,750,560.06 - Step 5: Solve for x
x = 356,620,750,560.06/680,927.80 - Step 6: Final answer
x = 523,727.70
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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.