Finding the Fourth Proportional to 680,840.99, 1,021,408.29 and 339,470.54
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Solution
The fourth proportional to 680,840.99, 1,021,408.29 and 339,470.54 is: 509,279.00
Step by Step Solution
- Step 1: Write the proportion equation
680,840.99 : 1,021,408.29 = 339,470.54 : x - Step 2: Convert to fraction form
680,840.99/1,021,408.29 = 339,470.54/x - Step 3: Cross multiply
680,840.99x = 1,021,408.29 × 339,470.54 - Step 4: Simplify right side
680,840.99x = 346,738,018,659.74 - Step 5: Solve for x
x = 346,738,018,659.74/680,840.99 - Step 6: Final answer
x = 509,279.00
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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.