Finding the Fourth Proportional to 626,645.70, 939,968.55 and 311,717.70
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Solution
The fourth proportional to 626,645.70, 939,968.55 and 311,717.70 is: 467,576.55
Step by Step Solution
- Step 1: Write the proportion equation
626,645.70 : 939,968.55 = 311,717.70 : x - Step 2: Convert to fraction form
626,645.70/939,968.55 = 311,717.70/x - Step 3: Cross multiply
626,645.70x = 939,968.55 × 311,717.70 - Step 4: Simplify right side
626,645.70x = 293,004,834,478.34 - Step 5: Solve for x
x = 293,004,834,478.34/626,645.70 - Step 6: Final answer
x = 467,576.55
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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.