Finding the Fourth Proportional to 680,840.24, 1,021,407.17 and 339,469.79
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Solution
The fourth proportional to 680,840.24, 1,021,407.17 and 339,469.79 is: 509,277.88
Step by Step Solution
- Step 1: Write the proportion equation
680,840.24 : 1,021,407.17 = 339,469.79 : x - Step 2: Convert to fraction form
680,840.24/1,021,407.17 = 339,469.79/x - Step 3: Cross multiply
680,840.24x = 1,021,407.17 × 339,469.79 - Step 4: Simplify right side
680,840.24x = 346,736,870,700.01 - Step 5: Solve for x
x = 346,736,870,700.01/680,840.24 - Step 6: Final answer
x = 509,277.88
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1.5x scale
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.