Finding the Fourth Proportional to 728,479.44, 1,090,658.58 and 386,142.84
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Solution
The fourth proportional to 728,479.44, 1,090,658.58 and 386,142.84 is: 578,122.01
Step by Step Solution
- Step 1: Write the proportion equation
728,479.44 : 1,090,658.58 = 386,142.84 : x - Step 2: Convert to fraction form
728,479.44/1,090,658.58 = 386,142.84/x - Step 3: Cross multiply
728,479.44x = 1,090,658.58 × 386,142.84 - Step 4: Simplify right side
728,479.44x = 421,150,001,551.57 - Step 5: Solve for x
x = 421,150,001,551.57/728,479.44 - Step 6: Final answer
x = 578,122.01
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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.