Finding the Fourth Proportional to 809,715.30, 1,214,572.95 and 388,889.70
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Solution
The fourth proportional to 809,715.30, 1,214,572.95 and 388,889.70 is: 583,334.55
Step by Step Solution
- Step 1: Write the proportion equation
809,715.30 : 1,214,572.95 = 388,889.70 : x - Step 2: Convert to fraction form
809,715.30/1,214,572.95 = 388,889.70/x - Step 3: Cross multiply
809,715.30x = 1,214,572.95 × 388,889.70 - Step 4: Simplify right side
809,715.30x = 472,334,910,153.62 - Step 5: Solve for x
x = 472,334,910,153.62/809,715.30 - Step 6: Final answer
x = 583,334.55
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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.