Finding the Fourth Proportional to 638,189.70, 957,284.55 and 520,091.70
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Solution
The fourth proportional to 638,189.70, 957,284.55 and 520,091.70 is: 780,137.55
Step by Step Solution
- Step 1: Write the proportion equation
638,189.70 : 957,284.55 = 520,091.70 : x - Step 2: Convert to fraction form
638,189.70/957,284.55 = 520,091.70/x - Step 3: Cross multiply
638,189.70x = 957,284.55 × 520,091.70 - Step 4: Simplify right side
638,189.70x = 497,875,748,993.24 - Step 5: Solve for x
x = 497,875,748,993.24/638,189.70 - Step 6: Final answer
x = 780,137.55
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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.