Finding the Fourth Proportional to 680,469.12, 1,020,669.12 and 207,144
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Solution
The fourth proportional to 680,469.12, 1,020,669.12 and 207,144 is: 310,705.48
Step by Step Solution
- Step 1: Write the proportion equation
680,469.12 : 1,020,669.12 = 207,144 : x - Step 2: Convert to fraction form
680,469.12/1,020,669.12 = 207,144/x - Step 3: Cross multiply
680,469.12x = 1,020,669.12 × 207,144 - Step 4: Simplify right side
680,469.12x = 211,425,484,193.28 - Step 5: Solve for x
x = 211,425,484,193.28/680,469.12 - Step 6: Final answer
x = 310,705.48
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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.