Finding the Fourth Proportional to 489,358.91, 734,575.28 and 388,803.21
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Solution
The fourth proportional to 489,358.91, 734,575.28 and 388,803.21 is: 583,631.40
Step by Step Solution
- Step 1: Write the proportion equation
489,358.91 : 734,575.28 = 388,803.21 : x - Step 2: Convert to fraction form
489,358.91/734,575.28 = 388,803.21/x - Step 3: Cross multiply
489,358.91x = 734,575.28 × 388,803.21 - Step 4: Simplify right side
489,358.91x = 285,605,224,338.99 - Step 5: Solve for x
x = 285,605,224,338.99/489,358.91 - Step 6: Final answer
x = 583,631.40
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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.