Finding the Fourth Proportional to 607,497.40, 911,246.10 and 408,431.80
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Solution
The fourth proportional to 607,497.40, 911,246.10 and 408,431.80 is: 612,647.70
Step by Step Solution
- Step 1: Write the proportion equation
607,497.40 : 911,246.10 = 408,431.80 : x - Step 2: Convert to fraction form
607,497.40/911,246.10 = 408,431.80/x - Step 3: Cross multiply
607,497.40x = 911,246.10 × 408,431.80 - Step 4: Simplify right side
607,497.40x = 372,181,884,865.98 - Step 5: Solve for x
x = 372,181,884,865.98/607,497.40 - Step 6: Final answer
x = 612,647.70
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Double scale
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Similar ratio
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1.5x scale
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.