Finding the Fourth Proportional to 680,985.09, 1,021,474.89 and 207,669.08
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Solution
The fourth proportional to 680,985.09, 1,021,474.89 and 207,669.08 is: 311,502.78
Step by Step Solution
- Step 1: Write the proportion equation
680,985.09 : 1,021,474.89 = 207,669.08 : x - Step 2: Convert to fraction form
680,985.09/1,021,474.89 = 207,669.08/x - Step 3: Cross multiply
680,985.09x = 1,021,474.89 × 207,669.08 - Step 4: Simplify right side
680,985.09x = 212,128,750,649.40 - Step 5: Solve for x
x = 212,128,750,649.40/680,985.09 - Step 6: Final answer
x = 311,502.78
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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.