Finding the Fourth Proportional to 678,122.70, 1,018,350.45 and 442,509.90
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Solution
The fourth proportional to 678,122.70, 1,018,350.45 and 442,509.90 is: 664,525.99
Step by Step Solution
- Step 1: Write the proportion equation
678,122.70 : 1,018,350.45 = 442,509.90 : x - Step 2: Convert to fraction form
678,122.70/1,018,350.45 = 442,509.90/x - Step 3: Cross multiply
678,122.70x = 1,018,350.45 × 442,509.90 - Step 4: Simplify right side
678,122.70x = 450,630,155,794.46 - Step 5: Solve for x
x = 450,630,155,794.46/678,122.70 - Step 6: Final answer
x = 664,525.99
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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.