Finding the Fourth Proportional to 638,197.70, 957,296.55 and 520,099.70
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Solution
The fourth proportional to 638,197.70, 957,296.55 and 520,099.70 is: 780,149.55
Step by Step Solution
- Step 1: Write the proportion equation
638,197.70 : 957,296.55 = 520,099.70 : x - Step 2: Convert to fraction form
638,197.70/957,296.55 = 520,099.70/x - Step 3: Cross multiply
638,197.70x = 957,296.55 × 520,099.70 - Step 4: Simplify right side
638,197.70x = 497,889,648,466.04 - Step 5: Solve for x
x = 497,889,648,466.04/638,197.70 - Step 6: Final answer
x = 780,149.55
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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.