Finding the Fourth Proportional to 916,839.19, 1,376,163.87 and 688,340.07
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Solution
The fourth proportional to 916,839.19, 1,376,163.87 and 688,340.07 is: 1,033,189.62
Step by Step Solution
- Step 1: Write the proportion equation
916,839.19 : 1,376,163.87 = 688,340.07 : x - Step 2: Convert to fraction form
916,839.19/1,376,163.87 = 688,340.07/x - Step 3: Cross multiply
916,839.19x = 1,376,163.87 × 688,340.07 - Step 4: Simplify right side
916,839.19x = 947,268,734,607.27 - Step 5: Solve for x
x = 947,268,734,607.27/916,839.19 - Step 6: Final answer
x = 1,033,189.62
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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.