Finding the Fourth Proportional to 434,561.20, 651,623.10 and 257,122.60
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Solution
The fourth proportional to 434,561.20, 651,623.10 and 257,122.60 is: 385,554.50
Step by Step Solution
- Step 1: Write the proportion equation
434,561.20 : 651,623.10 = 257,122.60 : x - Step 2: Convert to fraction form
434,561.20/651,623.10 = 257,122.60/x - Step 3: Cross multiply
434,561.20x = 651,623.10 × 257,122.60 - Step 4: Simplify right side
434,561.20x = 167,547,025,692.06 - Step 5: Solve for x
x = 167,547,025,692.06/434,561.20 - Step 6: Final answer
x = 385,554.50
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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.