Finding the Fourth Proportional to 612,984.87, 917,705.84 and 388,598.67
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Solution
The fourth proportional to 612,984.87, 917,705.84 and 388,598.67 is: 581,774.99
Step by Step Solution
- Step 1: Write the proportion equation
612,984.87 : 917,705.84 = 388,598.67 : x - Step 2: Convert to fraction form
612,984.87/917,705.84 = 388,598.67/x - Step 3: Cross multiply
612,984.87x = 917,705.84 × 388,598.67 - Step 4: Simplify right side
612,984.87x = 356,619,266,932.24 - Step 5: Solve for x
x = 356,619,266,932.24/612,984.87 - Step 6: Final answer
x = 581,774.99
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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.