Finding the Fourth Proportional to 678,811.08, 936,774.11 and 372,891.70
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Solution
The fourth proportional to 678,811.08, 936,774.11 and 372,891.70 is: 514,598.69
Step by Step Solution
- Step 1: Write the proportion equation
678,811.08 : 936,774.11 = 372,891.70 : x - Step 2: Convert to fraction form
678,811.08/936,774.11 = 372,891.70/x - Step 3: Cross multiply
678,811.08x = 936,774.11 × 372,891.70 - Step 4: Simplify right side
678,811.08x = 349,315,292,497.08 - Step 5: Solve for x
x = 349,315,292,497.08/678,811.08 - Step 6: Final answer
x = 514,598.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.