Finding the Fourth Proportional to 680,935.10, 1,021,402.65 and 207,619.70
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Solution
The fourth proportional to 680,935.10, 1,021,402.65 and 207,619.70 is: 311,429.55
Step by Step Solution
- Step 1: Write the proportion equation
680,935.10 : 1,021,402.65 = 207,619.70 : x - Step 2: Convert to fraction form
680,935.10/1,021,402.65 = 207,619.70/x - Step 3: Cross multiply
680,935.10x = 1,021,402.65 × 207,619.70 - Step 4: Simplify right side
680,935.10x = 212,063,311,772.21 - Step 5: Solve for x
x = 212,063,311,772.21/680,935.10 - Step 6: Final answer
x = 311,429.55
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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.